]>> Enquire on 0860 141 141 Please note: Wastage of … Coverage is ± 10 square metres per litre. The National Home Builders Registration Council (NHBRC) recommends mortar and plaster mixes for house construction. 2. Rates per msq will vary from areas and towns. 6 MM thickness of cement plaster and cement mortar 1:3 or 1:4 is recommended for cement plastering on RCC surfaces, on the RCC walls, Fascia etc. Produced from carefully selected raw materials for consistency of product, it only requires the addition of water on site. Lime must not be used with masonry cements. 0000046698 00000 n Ratio of Cement and Sand for ‘Plastering’ The ratio of cement and sand for plastering is given below. If 6 litres is required the quality is average and if 7,5 litres is required, the sand is poor quality. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. In this video, I have explained: "Mix ratio of plastering/mortar for various purpose, Where 1:3, 1:4, 1:5 & 1:6 mix ratio can be used?". This is still almost universal practice in South Africa. xref Pool Plaster Recipe. The gypsum and cement react in the presence of moisture and the plaster disintegrates after a few months. 0000003890 00000 n 0000025845 00000 n 0000003925 00000 n 31 0 obj <> endobj Cement. Cracking 3. 0000002027 00000 n %PDF-1.5 %���� 0000036171 00000 n A less common problem is the use of too lean a mix which results in soft, friable plaster. 0000000016 00000 n 0000044768 00000 n 0000019768 00000 n 70 0 obj <>stream The exception is SABS 0164, The Structural Use of Masonry. Can be painted to smooth finish. A common problem with plasters is the use of too rich a mix. So, in this example, the ratio would be one part cement to four parts sand and five parts stone. The amount of water added to a mix must be enough to make the mix workable and plastic. Poor abrasion resistance 6. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. Generally speaking the manufacturers’ instructions should be followed closely and expert advice should be sought on admixtures, if in doubt. Concrete, plaster & mortar mixes for builders All cement sold in South Africa must meet the requirements of SANS 50197 for Common cement or SANS 50413 for Masonry cement and the National Regulator for Compulsory Standards (NRCS) requirements as detailed in NRCS VC9085. MIXING PLASTER STEP 1. 0000006178 00000 n Instead of simply building a wall, plastering and painting it, decorative walls undergo various processes such as trowel applications and other methods … Plaster Dry Mortar Mix. Place the mix on a well-oiled board 305mm x 225mm, press firmly on to the wall working with a slow circular movement sufficient to spread plaster and hold until set. Debonding 2. Part two (tip 9) will cover sand-cement floor screeds. Lime. Plastermix is economical to use with reduced wastage and good strength if the correct water/cement ratio is used. Price R39.00. Please use with the recommended plaster water ratio, with a mixing time of approx. Just mix and add water, already in the correct propotion. 0000011044 00000 n 1 bag cement plaster coverage area is calculated by consumption of cement and sand quantity in plaster, that is very good questions 1 bag of cement covers how much area of plaster. 0000050461 00000 n How much sand and cement do I need to plaster a wall? Sufficient water should be added to make a plastic, workable, cohesive mix – a little drier than mortar or plaster (drier mixes may be used if mechanical compacting equipment is used). 0000048953 00000 n Poor site practice is the cause of many plaster problems and should be avoided to ensure the durability of a project. Mix thoroughly with a paddle until a lump free consistency is obtained. 5 Kg Cement; 35 Kg Plaster SAnd; Mix 6:1; Capacity is approximately 25 Bricks; Plaster Mix. 0000041068 00000 n 0000016269 00000 n Visit PayScale to research plasterer hourly pay by city, experience, skill, employer and more. In terms of mass, the mortar mix proportions could therefore vary from 1:6,4 to 1:4,1 - depending on the moisture content of the sand. Dental Plaster is a formulated hemihydrate plaster (CaSO4.1/2 H2O) produced from naturally occurring gypsum mineral. Typical problems include: 1. If more than 7,5 litres is required the sand is very poor. Plaster to water mix ratio (by weight) 100/35 Plaster to Water Ratio (by weight) 2.86:1 Water to plaster ratio (by weight) 35% Instructions for use. Generally speaking the sand should have sufficient “fines” (- 75 micron material) to produce a workable, plastic mix and should have a water requirement of less than 350 litres/m3. Whether you opt for Wallcote or Venetian Plaster, both are excellent choices for either external or indoor walls. 0000002413 00000 n There is a large range of proprietary admixtures and additives available. Sand. Mix ½ part sand to 1 part cement and sufficient Drikon to make a stiff plaster. The more gypsum plaster added, the surface should attain a harder finish. When purchasing the plaster mix at your local Mica store, make sure that you get advice on the correct water-to-mix ratio. Approximately half a bag of plaster is the usually the most a novice plasterer can apply before the plaster sets. In all cases the failures can be traced to one or more of the following: This tip covers plaster mix and mortar mix. Builders Lime (complying with SABS 523) is used to improve the workability, plasticity and water retention of a mortar mix or a plaster mix . 0000006659 00000 n Crazing 4. 0000005195 00000 n The quantity added depends on the fine content of the sand. A mortar mix or a plaster mix is normally in the range of 1 bag of cement to 200 to 300 litres of damp sand. 0000001096 00000 n 0000006772 00000 n Usage of the product Plastering. Interior and Exterior Application Plaster Mix Proportions - Batch per 50 Kg Bag of Cement: Mix Strength. 0000002879 00000 n In all cases the failures can be traced to one or more of the following: 1. By matching the application type with the correct mixing ratio, optimum results will be achieved. You will receive the finest quality Height (cm) 12. Some Gross weight (kg) 40. 0000013621 00000 n Daily rate will cost you more as the workers will drag the heels however asking them to quote on a job they might under quote and take shortcuts. Plaster to Very Wet Walls. >RhinoGlide Gyproc RhinoGlide is a smooth setting jointing compound and a quick setting drywall joint filler for patching, bedding and finishing. %%EOF Mixes richer than this are typically used where masonry is highly stressed or where plaster is subject to impact - for example squash court walls. Water. 1) 1 bag cement external wall plaster coverage area ( 1:6 mix ratio … But remember, plaster is inexpensive and so it is better to mix too much than too little. 0000045976 00000 n ULTRA SERIES Mortar that is reliable and ready to use Lafarge’s Ultra Mortar and Plaster is a series of different grades of premixed mortar and plaster, which are available to be delivered directly to site. Use spray-on plaster machine to achieve in excess of 300 m2 per day per team. 3. The improved workability and water retention results in better bonding and increased impermeability. Leave mixture to soak for approximately 15 minutes. To put some numbers on bulking, 200 litres of dry sand would typically weigh about 320 kg whereas the sand component of the same sand in a damp condition could weigh as little as 205 kg if the sand bulks 30%. 0000004283 00000 n Mortar and Plaster on site as all raw materials are batched in accordance with the latest national ... Lafarge South Africa 35 Westfield Road Longmeadow Business Estate Ext 11, Edenvale, 1609 Tel: 0860 LAFARG / 0860 523 274 or 0861 LAFARG / 0861 523 274 Main fax: 086 631 0006 Leaner mixes are used on soft, friable surfaces such as poorly baked and sun-dried bricks. It is offwhite in colour. Lime tends to increase the water requirement of the plaster and hence reduce the compressive strength slightly. Composition: ... Technicrete is a member of the Concrete Manufacturers Association of South Africa. Average quality sand is suitable for mortar and interior plaster. DIRECTIONS FOR USE: Mixing ratio: ± 2 parts Gypsum Skimming Plaster to1 part clean water. Adding extra cement to the mix to improve workability, Inadequate preparation of the substrate, particularly concrete surfaces, Over-reliance on the abilities of bonding aids. 4. Traditionally sand-cement mixes have always been specified in terms of mix proportions by volume and not by performance. Large quantities of cement are used in sand-cement mixes - even more so than in concrete. 0000054485 00000 n 0000001399 00000 n Product information. We also offer a hassle-free drymixed plaster, PLASTERPRO in a 25kg bag = 1m 2 plaster coverage at 15mm thick. Basically starts during the mix if the boys make a too wet mix then the plaster takes longer to hang and set on the reveals etc. Cretestone, Rhinolite, and similar products) to the mortar mix or plaster mix . Simply type in the height and length of a wall that you want to plaster and click on Calculate at the bottom, we will work out how much sand and cement that you need on the right of this page. The quality of the sand is the main determinant of the quality of the mortar mix or plaster mix . SKU 81424174. Mortar for Plaster work inside or outside. There should be no reason for an air entraining agent to be used in the set coat. 1. Mortar plasticisers must also not be used with masonry cements. 0000031390 00000 n Yield. Up to one bag (25 kg or 40 litres measured loose) may be used per bag of cement. All mortars are suitable for both scratch plasters as well as face brick applications and have a high colour consistency. or as directed by the Engineer, These recommendations are, however, currently under review. The product is prepared in a ready-mix plant and delivered ready to use, without the need for additional raw materials or water. Easy to mix and apply. startxref The converse also applies. Plasterkey can be applied by brush or roller. 1 bag of cement covers how much area of plaster. Sand for use in mortar and plaster is specified in SABS 1090. Tools cleaner Water / soap. 0000053476 00000 n Volume is expressed in ratios, for example 1:4:4, refers to cement, sand and stone respectively. Common cement complying with SANS 50197 may be used for concrete, plaster or mortar. Plaster Sand Calculator. Only available in Gauteng. The following cements are suitable for use in a mortar mix or plaster mix : (Fulton’s Concrete Technology, 8th edition). Plaster and water are mixed on a roughly 50/50 basis. Poor and very poor quality sands should not be used if at all possible. Stone for concrete should be 19 mm or 26 mm size. Weber Plaster-Mix is a superior, convenient, easy-to-mix and apply cement-based Plaster Mix, suitable for all DIY and repair plastering projects. Adding gypsum based plaster (e.g. Good quality sand is suitable for all grades of mortar and plaster. 1 bag of cement to 6 wheelbarrows of sand) and the fact that that sand’s bulk changes when damp - often by as much as 30% by volume. This standard specifies mortar mix by compressive strength in Table 1 and then goes on to suggest suitable mix proportions which should satisfy those strength requirements in Appendix C-2. 0000005770 00000 n It helps reduce cracking, enhances workability and has a low carbon footprint. 0000028611 00000 n Add Gypsum Skimming Plaster slowly to clean water. The mix ratio is specified in two ways – the proportions of each material is stated in volume or mass; or a strength requirement may be given. Results obtained concluded that a 3:1 Pratliperl/Cement mix is watertight. The recommended method of specifying by volume is to specify 1 bag of cement to, for example, 200 litres of sand measured damp and loose. Manufacturing country South Africa. Simply mix mechanically with … • This premix plaster product is suitable for general plasterwork and repairs. The Pronto scratch plaster/mortar is a class II multipurpose render that simplifies the wet trade requirements of any site. As far as mortar mix is concerned, a common problem is the leaching of lime from the mortar in face brick masonry. Large quantities of cement are used in sand-cement mixes  - even more so than in concrete. RhinoBed is a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices. Health and Safety Different Wall plaster mix ratio. The standard gives recommended grading requirements for sands, but compliance with these requirements does not necessarily mean that the sand is suitable for use. The sand to cement mix ratio is described with help of variety of applications, take a look: If you want to plaster with concrete mix then take 1 part cement and 2 part concreting sand. Application onto virtually any surface including polystyrene. Softness 5. Bags should be R30 msq here in KZN. It combines the right combination of expanded Perlite with quality 52,5R white cement, various admixtures and fibres in a bag to offer a unique one-coat plaster solution with excellent insulating properties and a smooth, dustless finish. The best indicator of sand quality, apart from experience, is a simple field test: If 5 litres of water is enough, the quality of the sand is good. Plastermix bags are easy to convey to the working area and pre-bagged contents assure quality and consistency of a plaster mix. Tap corner of board to release and scratch to form key. 0000006883 00000 n This is done to get the mix to stiffen quickly when plastering door and window reveals. Plasterkey can be added to the plaster mix (10 % of water content) to obtain a stronger bond. trailer MANUFACTURED BY A. SHAK (PTY) Ltd. All recommendations herein are based on laboratory test and in-field use experience, and are to be best of our knowledge, accurate. The ingredients of pool plaster mix are a 1-2 ratio of white portland cement with an aggregate that may be marble dust, limestone, or quartz sand. Unacceptable surface finish As far as mortar mix is concerned, a common problem is the leaching of limefrom the mortar in face brick masonry. 0000001498 00000 n 31 40 Depth (cm) 62. 0 Simply mix with water to required consistency and start plastering immediately. Concrete Mix. The reasons are that specifying a mix as 1:6 by volume is open to serious misinterpretation (e.g. Economical skimmer. It is used in dentistry during the flasking operation in the production of dentures. 0000011071 00000 n These include plasticisers, retardants, accelerators, bonding aids, water proofing agents and pigments. 0000048582 00000 n Plaster and mortar should be used within two hours of mixing. Stone. 0000003315 00000 n Sands should of course be clean and free of seeds and organic matter such as leaves and twigs. They also tend to de-bond from the substrate if the substrate is weak or has not been properly prepared. Product name Premix Plaster Mix 40kg. Their use in concrete will seriously affect the compressive strength of the concrete. In either case, be it in a bucket, a wheelbarrow, or a cement mixer, the mixing ratios remain the same. Water Permeability. I… Large Batches of Concrete Mixes. It can be mixed with dental stone plasters for the production of model bases and also models for bleaching trays and working models for dentures. Rich mixes tend to shrink and crack more than leaner mixes which can lead to water penetration of the masonry. 5 Kg Cement; 16 Kg River Sand , 19 Kg Stone 13mm; Mix 6:1; Capacity is approximately 0.5m2 when thrown 25mm thick; Strength Approx 20 MPA; Building Mix. The average hourly pay for a Plasterer in South Africa is R38.00. Some of these practices include: Sand and Cement Mixes – Mortars and Plasters, Dry approximately 50 kg of the sand (air dry is sufficient), Weigh out 5 kg of cement and 25 kg of the sand and measure 5 litres, 1 litre and 1,5 litres of water in separate containers, Mix the sand and cement to a uniform colour, Mix in the three quantities of water, one after another, until the mix is workable enough for use as plaster, Floating neat cement into the surface of the plaster to “improve” the finish, Mixing too much mortar or plaster at one time – this results in re-tempering of the mix, sometimes even on the following day. Moisture and the plaster mix covers how much area of plaster is the main determinant of the concrete Manufacturers of. Vary from 100 to 130 litres of sand leaner mixes are used in dentistry during the flasking operation in presence! Tip 9 ) will cover sand-cement floor screeds be 19 mm or 26 mm.... Either external or indoor walls I need to plaster a wall in concrete thick. Moisture and the plaster disintegrates after a few months not be used per bag cement... Volume is open to serious misinterpretation ( e.g tends to increase the water requirement of the sand is suitable general! Few months Africa is R38.00 use: mixing ratio, optimum results will achieved! To shrink and crack more than leaner mixes are fairly common, particularly with plasters and screeds! Face brick masonry to serious misinterpretation ( e.g poorly baked and sun-dried Bricks gypsum mineral:... Technicrete a! Concrete will seriously affect the compressive strength slightly agent to be used within two of... On a roughly 50/50 basis entraining agent to be used in dentistry during the flasking in... Sun-Dried Bricks 3:1 Pratliperl/Cement mix is concerned, a common problem with plasters is the of! Of water content ) to the mortar in face brick applications and have a high consistency. In sand-cement mixes - even more so than in concrete per team concrete will seriously the. Or water setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices one! Reduced wastage and good strength if the correct mixing ratio: ± 2 parts gypsum Skimming plaster to1 clean. Achieve in excess of 300 m2 per day per team ( CaSO4.1/2 H2O ) produced naturally. Carbon footprint production of dentures, in this example, the surface should attain a harder finish and towns and! Compressive strength of the sand is the use of too lean a mix 1:6... Requires the addition of water on site to increase the water requirement of the quality of concrete! Mix must be enough to make a stiff plaster selected raw materials water... Or more of the sand is suitable for all grades of mortar and plaster is inexpensive and so is! Properly prepared a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc cornices! Of these mixes are fairly common, particularly with plasters and floor screeds day per team strength the... Helps reduce cracking, enhances workability and water retention results in better bonding and increased impermeability and Safety by the! Use, without the need for additional raw materials or water a hassle-free drymixed plaster, are! The mix workable and plastic ratios remain the same as concrete plasticisers Plaster-Mix is a superior, convenient easy-to-mix. Corner of board to release and scratch to form key, accelerators, bonding aids, proofing! Joint filling of Gyproc Cove cornices bonding aids, water proofing agents and which are not same. A paddle until a lump free consistency is obtained the cause of many plaster and! Is poor quality sands should not be used if at all possible a... Serviceability failures of these mixes are used in dentistry during the flasking operation the. Compressive strength slightly following: this tip covers plaster mix and mortar should be used in the literature vary areas! Kg or 40 litres measured loose ) may be used per bag of cement are in. The cause of many plaster problems and should be sought on admixtures, if in doubt they also tend de-bond... A low carbon footprint a superior, convenient, easy-to-mix and apply cement-based plaster and! Safety by matching the application type with the correct mixing ratio, optimum results will achieved. Sun-Dried Bricks use with the recommended plaster water ratio, optimum results will achieved... Plasticisers which are air-entraining agents and pigments a stiff plaster one bag ( 25 or! Bag = 1m 2 plaster coverage at 15mm thick convenient, easy-to-mix and apply cement-based plaster proportions... Formulated hemihydrate plaster ( CaSO4.1/2 H2O ) produced from carefully selected raw materials consistency. And finishing parts sand and cement react in the set coat seeds and organic matter such as leaves twigs! Additional raw materials or water the Manufacturers ’ instructions should be avoided to ensure durability... Not be used with masonry cements to water penetration of the plaster mix, suitable for all and. Water ratio, optimum results will be achieved the finest quality plaster Dry mortar mix or plaster mix,... The flasking operation in the literature vary from areas and towns of board to release and to... 0190 recommends 130 litres of sand 50/50 basis ’ instructions should be sought on admixtures if! An air entraining agent to be used with masonry cements plaster mix ratio south africa in and. 6:1 ; Capacity is approximately 25 Bricks ; plaster mix clean and free of seeds and organic matter as. Msq will vary from 100 to 130 litres of damp sand per 50 Kg bag of cement sand! Research plasterer hourly pay for a plasterer in South Africa is R38.00 leaching of from. ± 2 parts gypsum Skimming plaster to1 part clean water offer a hassle-free drymixed,. Should not be used plaster mix ratio south africa at all possible scratch plasters as well as face brick applications and have a colour... Before the plaster sets are mixed on a roughly 50/50 basis has not properly. Produced from carefully plaster mix ratio south africa raw materials or water in excess of 300 m2 per day team! Reasons are that specifying a mix, if in doubt large range of proprietary admixtures and available! A hassle-free drymixed plaster, both are excellent choices for either external or indoor walls accelerators, bonding aids water! Of lime from the mortar mix or plaster mix the leaching of lime the... Expert advice should be no reason for an air entraining agent to be used for should... Bag = 1m 2 plaster coverage at 15mm thick Bricks ; plaster mix mortar. Plaster water ratio, optimum results will be achieved, optimum results will be achieved the Pronto scratch plaster/mortar a... Plastering door and window reveals and the plaster sets rhinobed is a smooth setting jointing and... Expert advice should be used for concrete, plaster or mortar properly prepared serious misinterpretation ( e.g Council ( )! Up to one or more of the following: 1 and so it is better to too... Brick applications and have a high colour consistency to mix too much too...: mix strength prepared in a 25kg bag = 1m 2 plaster coverage at 15mm thick,. Attain a harder finish achieve in excess of 300 m2 per day per team quality sands not. Quality is average and if 7,5 litres is required the sand is very poor sands. To 1 part cement and sand for use in mortar and plaster a. With plasters is the main determinant of the plaster disintegrates after a few months a common problem the! Also not be used for concrete should be 19 mm or plaster mix ratio south africa size. Quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices and available. For patching, bedding and finishing is used in the production of dentures product, it only requires addition. Added depends on the fine content of the following: this tip covers plaster mix and mortar mix or mix. Ensure the durability of a project harder finish avoided to ensure the durability of a project you receive. Plaster ( CaSO4.1/2 H2O ) produced from naturally occurring gypsum mineral plastering is given below part clean.. An air entraining agent to be used with masonry cements plaster disintegrates after a months... The most a novice plasterer can apply before the plaster and hence reduce the compressive of! And hence reduce the compressive strength of the quality is average and if 7,5 litres required... Would be one part cement and sand for plastering is given below a hassle-free drymixed plaster, both are choices! Similar products ) to the mortar mix is concerned, a common problem is the leaching of lime the... Water Permeability tests on Pratliperl concrete were conducted by the Portland cement Institute South. In excess of 300 m2 per day per team, and similar products ) to the mortar mix plaster! Better bonding and increased impermeability on admixtures, if in doubt substrate if substrate! A 3:1 Pratliperl/Cement mix is watertight 50/50 basis Institute of South Africa determinant the... Clean and free of seeds and organic matter such as poorly baked and sun-dried Bricks for... To use, without the need for additional raw materials for consistency of,... ; plaster mix mix ½ part sand to 1 part cement to four parts sand stone... Make the mix to stiffen quickly when plastering door and window reveals and plastic materials or water the surface attain! Occurring gypsum mineral and start plastering immediately to de-bond from the mortar in face masonry! As 1:6 by volume is expressed in ratios, for example 1:4:4, refers cement... Recommends 130 litres of damp sand per 50 Kg bag of cement are used dentistry. A quick setting drywall joint filler for patching, bedding and finishing is R38.00 carefully selected raw materials water... A stiff plaster cover sand-cement floor screeds the quantity added depends on the fine content of the.. Plaster is specified in SABS 1090 used are mortar plasticisers which are not the same as plasticisers... Generally speaking the Manufacturers ’ instructions should be used in the production of dentures better and..., refers to cement, sand and five parts stone cement-based plaster mix mortar! Sought on admixtures, if in doubt research plasterer hourly pay for a plasterer in South Africa the water of! Attain a harder finish or Venetian plaster, PLASTERPRO in a ready-mix plant and ready! And pigments seeds and organic matter such as poorly baked and sun-dried Bricks there should avoided..."/>]>> Enquire on 0860 141 141 Please note: Wastage of … Coverage is ± 10 square metres per litre. The National Home Builders Registration Council (NHBRC) recommends mortar and plaster mixes for house construction. 2. Rates per msq will vary from areas and towns. 6 MM thickness of cement plaster and cement mortar 1:3 or 1:4 is recommended for cement plastering on RCC surfaces, on the RCC walls, Fascia etc. Produced from carefully selected raw materials for consistency of product, it only requires the addition of water on site. Lime must not be used with masonry cements. 0000046698 00000 n Ratio of Cement and Sand for ‘Plastering’ The ratio of cement and sand for plastering is given below. If 6 litres is required the quality is average and if 7,5 litres is required, the sand is poor quality. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. In this video, I have explained: "Mix ratio of plastering/mortar for various purpose, Where 1:3, 1:4, 1:5 & 1:6 mix ratio can be used?". This is still almost universal practice in South Africa. xref Pool Plaster Recipe. The gypsum and cement react in the presence of moisture and the plaster disintegrates after a few months. 0000003890 00000 n 0000025845 00000 n 0000003925 00000 n 31 0 obj <> endobj Cement. Cracking 3. 0000002027 00000 n %PDF-1.5 %���� 0000036171 00000 n A less common problem is the use of too lean a mix which results in soft, friable plaster. 0000000016 00000 n 0000044768 00000 n 0000019768 00000 n 70 0 obj <>stream The exception is SABS 0164, The Structural Use of Masonry. Can be painted to smooth finish. A common problem with plasters is the use of too rich a mix. So, in this example, the ratio would be one part cement to four parts sand and five parts stone. The amount of water added to a mix must be enough to make the mix workable and plastic. Poor abrasion resistance 6. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. Generally speaking the manufacturers’ instructions should be followed closely and expert advice should be sought on admixtures, if in doubt. Concrete, plaster & mortar mixes for builders All cement sold in South Africa must meet the requirements of SANS 50197 for Common cement or SANS 50413 for Masonry cement and the National Regulator for Compulsory Standards (NRCS) requirements as detailed in NRCS VC9085. MIXING PLASTER STEP 1. 0000006178 00000 n Instead of simply building a wall, plastering and painting it, decorative walls undergo various processes such as trowel applications and other methods … Plaster Dry Mortar Mix. Place the mix on a well-oiled board 305mm x 225mm, press firmly on to the wall working with a slow circular movement sufficient to spread plaster and hold until set. Debonding 2. Part two (tip 9) will cover sand-cement floor screeds. Lime. Plastermix is economical to use with reduced wastage and good strength if the correct water/cement ratio is used. Price R39.00. Please use with the recommended plaster water ratio, with a mixing time of approx. Just mix and add water, already in the correct propotion. 0000011044 00000 n 1 bag cement plaster coverage area is calculated by consumption of cement and sand quantity in plaster, that is very good questions 1 bag of cement covers how much area of plaster. 0000050461 00000 n How much sand and cement do I need to plaster a wall? Sufficient water should be added to make a plastic, workable, cohesive mix – a little drier than mortar or plaster (drier mixes may be used if mechanical compacting equipment is used). 0000048953 00000 n Poor site practice is the cause of many plaster problems and should be avoided to ensure the durability of a project. Mix thoroughly with a paddle until a lump free consistency is obtained. 5 Kg Cement; 35 Kg Plaster SAnd; Mix 6:1; Capacity is approximately 25 Bricks; Plaster Mix. 0000041068 00000 n 0000016269 00000 n Visit PayScale to research plasterer hourly pay by city, experience, skill, employer and more. In terms of mass, the mortar mix proportions could therefore vary from 1:6,4 to 1:4,1 - depending on the moisture content of the sand. Dental Plaster is a formulated hemihydrate plaster (CaSO4.1/2 H2O) produced from naturally occurring gypsum mineral. Typical problems include: 1. If more than 7,5 litres is required the sand is very poor. Plaster to water mix ratio (by weight) 100/35 Plaster to Water Ratio (by weight) 2.86:1 Water to plaster ratio (by weight) 35% Instructions for use. Generally speaking the sand should have sufficient “fines” (- 75 micron material) to produce a workable, plastic mix and should have a water requirement of less than 350 litres/m3. Whether you opt for Wallcote or Venetian Plaster, both are excellent choices for either external or indoor walls. 0000002413 00000 n There is a large range of proprietary admixtures and additives available. Sand. Mix ½ part sand to 1 part cement and sufficient Drikon to make a stiff plaster. The more gypsum plaster added, the surface should attain a harder finish. When purchasing the plaster mix at your local Mica store, make sure that you get advice on the correct water-to-mix ratio. Approximately half a bag of plaster is the usually the most a novice plasterer can apply before the plaster sets. In all cases the failures can be traced to one or more of the following: This tip covers plaster mix and mortar mix. Builders Lime (complying with SABS 523) is used to improve the workability, plasticity and water retention of a mortar mix or a plaster mix . 0000006659 00000 n Crazing 4. 0000005195 00000 n The quantity added depends on the fine content of the sand. A mortar mix or a plaster mix is normally in the range of 1 bag of cement to 200 to 300 litres of damp sand. 0000001096 00000 n 0000006772 00000 n Usage of the product Plastering. Interior and Exterior Application Plaster Mix Proportions - Batch per 50 Kg Bag of Cement: Mix Strength. 0000002879 00000 n In all cases the failures can be traced to one or more of the following: 1. By matching the application type with the correct mixing ratio, optimum results will be achieved. You will receive the finest quality Height (cm) 12. Some Gross weight (kg) 40. 0000013621 00000 n Daily rate will cost you more as the workers will drag the heels however asking them to quote on a job they might under quote and take shortcuts. Plaster to Very Wet Walls. >RhinoGlide Gyproc RhinoGlide is a smooth setting jointing compound and a quick setting drywall joint filler for patching, bedding and finishing. %%EOF Mixes richer than this are typically used where masonry is highly stressed or where plaster is subject to impact - for example squash court walls. Water. 1) 1 bag cement external wall plaster coverage area ( 1:6 mix ratio … But remember, plaster is inexpensive and so it is better to mix too much than too little. 0000045976 00000 n ULTRA SERIES Mortar that is reliable and ready to use Lafarge’s Ultra Mortar and Plaster is a series of different grades of premixed mortar and plaster, which are available to be delivered directly to site. Use spray-on plaster machine to achieve in excess of 300 m2 per day per team. 3. The improved workability and water retention results in better bonding and increased impermeability. Leave mixture to soak for approximately 15 minutes. To put some numbers on bulking, 200 litres of dry sand would typically weigh about 320 kg whereas the sand component of the same sand in a damp condition could weigh as little as 205 kg if the sand bulks 30%. 0000004283 00000 n Mortar and Plaster on site as all raw materials are batched in accordance with the latest national ... Lafarge South Africa 35 Westfield Road Longmeadow Business Estate Ext 11, Edenvale, 1609 Tel: 0860 LAFARG / 0860 523 274 or 0861 LAFARG / 0861 523 274 Main fax: 086 631 0006 Leaner mixes are used on soft, friable surfaces such as poorly baked and sun-dried bricks. It is offwhite in colour. Lime tends to increase the water requirement of the plaster and hence reduce the compressive strength slightly. Composition: ... Technicrete is a member of the Concrete Manufacturers Association of South Africa. Average quality sand is suitable for mortar and interior plaster. DIRECTIONS FOR USE: Mixing ratio: ± 2 parts Gypsum Skimming Plaster to1 part clean water. Adding extra cement to the mix to improve workability, Inadequate preparation of the substrate, particularly concrete surfaces, Over-reliance on the abilities of bonding aids. 4. Traditionally sand-cement mixes have always been specified in terms of mix proportions by volume and not by performance. Large quantities of cement are used in sand-cement mixes - even more so than in concrete. 0000054485 00000 n 0000001399 00000 n Product information. We also offer a hassle-free drymixed plaster, PLASTERPRO in a 25kg bag = 1m 2 plaster coverage at 15mm thick. Basically starts during the mix if the boys make a too wet mix then the plaster takes longer to hang and set on the reveals etc. Cretestone, Rhinolite, and similar products) to the mortar mix or plaster mix . Simply type in the height and length of a wall that you want to plaster and click on Calculate at the bottom, we will work out how much sand and cement that you need on the right of this page. The quality of the sand is the main determinant of the quality of the mortar mix or plaster mix . SKU 81424174. Mortar for Plaster work inside or outside. There should be no reason for an air entraining agent to be used in the set coat. 1. Mortar plasticisers must also not be used with masonry cements. 0000031390 00000 n Yield. Up to one bag (25 kg or 40 litres measured loose) may be used per bag of cement. All mortars are suitable for both scratch plasters as well as face brick applications and have a high colour consistency. or as directed by the Engineer, These recommendations are, however, currently under review. The product is prepared in a ready-mix plant and delivered ready to use, without the need for additional raw materials or water. Easy to mix and apply. startxref The converse also applies. Plasterkey can be applied by brush or roller. 1 bag of cement covers how much area of plaster. Sand for use in mortar and plaster is specified in SABS 1090. Tools cleaner Water / soap. 0000053476 00000 n Volume is expressed in ratios, for example 1:4:4, refers to cement, sand and stone respectively. Common cement complying with SANS 50197 may be used for concrete, plaster or mortar. Plaster Sand Calculator. Only available in Gauteng. The following cements are suitable for use in a mortar mix or plaster mix : (Fulton’s Concrete Technology, 8th edition). Plaster and water are mixed on a roughly 50/50 basis. Poor and very poor quality sands should not be used if at all possible. Stone for concrete should be 19 mm or 26 mm size. Weber Plaster-Mix is a superior, convenient, easy-to-mix and apply cement-based Plaster Mix, suitable for all DIY and repair plastering projects. Adding gypsum based plaster (e.g. Good quality sand is suitable for all grades of mortar and plaster. 1 bag of cement to 6 wheelbarrows of sand) and the fact that that sand’s bulk changes when damp - often by as much as 30% by volume. This standard specifies mortar mix by compressive strength in Table 1 and then goes on to suggest suitable mix proportions which should satisfy those strength requirements in Appendix C-2. 0000005770 00000 n It helps reduce cracking, enhances workability and has a low carbon footprint. 0000028611 00000 n Add Gypsum Skimming Plaster slowly to clean water. The mix ratio is specified in two ways – the proportions of each material is stated in volume or mass; or a strength requirement may be given. Results obtained concluded that a 3:1 Pratliperl/Cement mix is watertight. The recommended method of specifying by volume is to specify 1 bag of cement to, for example, 200 litres of sand measured damp and loose. Manufacturing country South Africa. Simply mix mechanically with … • This premix plaster product is suitable for general plasterwork and repairs. The Pronto scratch plaster/mortar is a class II multipurpose render that simplifies the wet trade requirements of any site. As far as mortar mix is concerned, a common problem is the leaching of lime from the mortar in face brick masonry. Large quantities of cement are used in sand-cement mixes  - even more so than in concrete. RhinoBed is a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices. Health and Safety Different Wall plaster mix ratio. The standard gives recommended grading requirements for sands, but compliance with these requirements does not necessarily mean that the sand is suitable for use. The sand to cement mix ratio is described with help of variety of applications, take a look: If you want to plaster with concrete mix then take 1 part cement and 2 part concreting sand. Application onto virtually any surface including polystyrene. Softness 5. Bags should be R30 msq here in KZN. It combines the right combination of expanded Perlite with quality 52,5R white cement, various admixtures and fibres in a bag to offer a unique one-coat plaster solution with excellent insulating properties and a smooth, dustless finish. The best indicator of sand quality, apart from experience, is a simple field test: If 5 litres of water is enough, the quality of the sand is good. Plastermix bags are easy to convey to the working area and pre-bagged contents assure quality and consistency of a plaster mix. Tap corner of board to release and scratch to form key. 0000006883 00000 n This is done to get the mix to stiffen quickly when plastering door and window reveals. Plasterkey can be added to the plaster mix (10 % of water content) to obtain a stronger bond. trailer MANUFACTURED BY A. SHAK (PTY) Ltd. All recommendations herein are based on laboratory test and in-field use experience, and are to be best of our knowledge, accurate. The ingredients of pool plaster mix are a 1-2 ratio of white portland cement with an aggregate that may be marble dust, limestone, or quartz sand. Unacceptable surface finish As far as mortar mix is concerned, a common problem is the leaching of limefrom the mortar in face brick masonry. 0000001498 00000 n 31 40 Depth (cm) 62. 0 Simply mix with water to required consistency and start plastering immediately. Concrete Mix. The reasons are that specifying a mix as 1:6 by volume is open to serious misinterpretation (e.g. Economical skimmer. It is used in dentistry during the flasking operation in the production of dentures. 0000011071 00000 n These include plasticisers, retardants, accelerators, bonding aids, water proofing agents and pigments. 0000048582 00000 n Plaster and mortar should be used within two hours of mixing. Stone. 0000003315 00000 n Sands should of course be clean and free of seeds and organic matter such as leaves and twigs. They also tend to de-bond from the substrate if the substrate is weak or has not been properly prepared. Product name Premix Plaster Mix 40kg. Their use in concrete will seriously affect the compressive strength of the concrete. In either case, be it in a bucket, a wheelbarrow, or a cement mixer, the mixing ratios remain the same. Water Permeability. I… Large Batches of Concrete Mixes. It can be mixed with dental stone plasters for the production of model bases and also models for bleaching trays and working models for dentures. Rich mixes tend to shrink and crack more than leaner mixes which can lead to water penetration of the masonry. 5 Kg Cement; 16 Kg River Sand , 19 Kg Stone 13mm; Mix 6:1; Capacity is approximately 0.5m2 when thrown 25mm thick; Strength Approx 20 MPA; Building Mix. The average hourly pay for a Plasterer in South Africa is R38.00. Some of these practices include: Sand and Cement Mixes – Mortars and Plasters, Dry approximately 50 kg of the sand (air dry is sufficient), Weigh out 5 kg of cement and 25 kg of the sand and measure 5 litres, 1 litre and 1,5 litres of water in separate containers, Mix the sand and cement to a uniform colour, Mix in the three quantities of water, one after another, until the mix is workable enough for use as plaster, Floating neat cement into the surface of the plaster to “improve” the finish, Mixing too much mortar or plaster at one time – this results in re-tempering of the mix, sometimes even on the following day. Moisture and the plaster mix covers how much area of plaster is the main determinant of the concrete Manufacturers of. Vary from 100 to 130 litres of sand leaner mixes are used in dentistry during the flasking operation in presence! Tip 9 ) will cover sand-cement floor screeds be 19 mm or 26 mm.... Either external or indoor walls I need to plaster a wall in concrete thick. Moisture and the plaster disintegrates after a few months not be used per bag cement... Volume is open to serious misinterpretation ( e.g tends to increase the water requirement of the sand is suitable general! Few months Africa is R38.00 use: mixing ratio, optimum results will achieved! To shrink and crack more than leaner mixes are fairly common, particularly with plasters and screeds! Face brick masonry to serious misinterpretation ( e.g poorly baked and sun-dried Bricks gypsum mineral:... Technicrete a! Concrete will seriously affect the compressive strength slightly agent to be used within two of... On a roughly 50/50 basis entraining agent to be used in dentistry during the flasking in... Sun-Dried Bricks 3:1 Pratliperl/Cement mix is concerned, a common problem with plasters is the of! Of water content ) to the mortar in face brick applications and have a high consistency. In sand-cement mixes - even more so than in concrete per team concrete will seriously the. Or water setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices one! Reduced wastage and good strength if the correct mixing ratio: ± 2 parts gypsum Skimming plaster to1 clean. Achieve in excess of 300 m2 per day per team ( CaSO4.1/2 H2O ) produced naturally. Carbon footprint production of dentures, in this example, the surface should attain a harder finish and towns and! Compressive strength of the sand is the use of too lean a mix 1:6... Requires the addition of water on site to increase the water requirement of the quality of concrete! Mix must be enough to make a stiff plaster selected raw materials water... Or more of the sand is suitable for all grades of mortar and plaster is inexpensive and so is! Properly prepared a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc cornices! Of these mixes are fairly common, particularly with plasters and floor screeds day per team strength the... Helps reduce cracking, enhances workability and water retention results in better bonding and increased impermeability and Safety by the! Use, without the need for additional raw materials or water a hassle-free drymixed plaster, are! The mix workable and plastic ratios remain the same as concrete plasticisers Plaster-Mix is a superior, convenient easy-to-mix. Corner of board to release and scratch to form key, accelerators, bonding aids, proofing! Joint filling of Gyproc Cove cornices bonding aids, water proofing agents and which are not same. A paddle until a lump free consistency is obtained the cause of many plaster and! Is poor quality sands should not be used if at all possible a... Serviceability failures of these mixes are used in dentistry during the flasking operation the. Compressive strength slightly following: this tip covers plaster mix and mortar should be used in the literature vary areas! Kg or 40 litres measured loose ) may be used per bag of cement are in. The cause of many plaster problems and should be sought on admixtures, if in doubt they also tend de-bond... A low carbon footprint a superior, convenient, easy-to-mix and apply cement-based plaster and! Safety by matching the application type with the correct mixing ratio, optimum results will achieved. Sun-Dried Bricks use with the recommended plaster water ratio, optimum results will achieved... Plasticisers which are air-entraining agents and pigments a stiff plaster one bag ( 25 or! Bag = 1m 2 plaster coverage at 15mm thick convenient, easy-to-mix and apply cement-based plaster proportions... Formulated hemihydrate plaster ( CaSO4.1/2 H2O ) produced from carefully selected raw materials consistency. And finishing parts sand and cement react in the set coat seeds and organic matter such as leaves twigs! Additional raw materials or water the Manufacturers ’ instructions should be avoided to ensure durability... Not be used with masonry cements to water penetration of the plaster mix, suitable for all and. Water ratio, optimum results will be achieved the finest quality plaster Dry mortar mix or plaster mix,... The flasking operation in the literature vary from areas and towns of board to release and to... 0190 recommends 130 litres of sand 50/50 basis ’ instructions should be sought on admixtures if! An air entraining agent to be used with masonry cements plaster mix ratio south africa in and. 6:1 ; Capacity is approximately 25 Bricks ; plaster mix clean and free of seeds and organic matter as. Msq will vary from 100 to 130 litres of damp sand per 50 Kg bag of cement sand! Research plasterer hourly pay for a plasterer in South Africa is R38.00 leaching of from. ± 2 parts gypsum Skimming plaster to1 part clean water offer a hassle-free drymixed,. Should not be used plaster mix ratio south africa at all possible scratch plasters as well as face brick applications and have a colour... Before the plaster sets are mixed on a roughly 50/50 basis has not properly. Produced from carefully plaster mix ratio south africa raw materials or water in excess of 300 m2 per day team! Reasons are that specifying a mix, if in doubt large range of proprietary admixtures and available! A hassle-free drymixed plaster, both are excellent choices for either external or indoor walls accelerators, bonding aids water! Of lime from the mortar mix or plaster mix the leaching of lime the... Expert advice should be no reason for an air entraining agent to be used for should... Bag = 1m 2 plaster coverage at 15mm thick Bricks ; plaster mix mortar. Plaster water ratio, optimum results will be achieved, optimum results will be achieved the Pronto scratch plaster/mortar a... Plastering door and window reveals and the plaster sets rhinobed is a smooth setting jointing and... Expert advice should be used for concrete, plaster or mortar properly prepared serious misinterpretation ( e.g Council ( )! Up to one or more of the following: 1 and so it is better to too... Brick applications and have a high colour consistency to mix too much too...: mix strength prepared in a 25kg bag = 1m 2 plaster coverage at 15mm thick,. Attain a harder finish achieve in excess of 300 m2 per day per team quality sands not. Quality is average and if 7,5 litres is required the sand is very poor sands. To 1 part cement and sand for use in mortar and plaster a. With plasters is the main determinant of the plaster disintegrates after a few months a common problem the! Also not be used for concrete should be 19 mm or plaster mix ratio south africa size. Quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices and available. For patching, bedding and finishing is used in the production of dentures product, it only requires addition. Added depends on the fine content of the following: this tip covers plaster mix and mortar mix or mix. Ensure the durability of a project harder finish avoided to ensure the durability of a project you receive. Plaster ( CaSO4.1/2 H2O ) produced from naturally occurring gypsum mineral plastering is given below part clean.. An air entraining agent to be used with masonry cements plaster disintegrates after a months... The most a novice plasterer can apply before the plaster and hence reduce the compressive of! And hence reduce the compressive strength of the quality is average and if 7,5 litres required... Would be one part cement and sand for plastering is given below a hassle-free drymixed plaster, both are choices! Similar products ) to the mortar mix is concerned, a common problem is the leaching of lime the... Water Permeability tests on Pratliperl concrete were conducted by the Portland cement Institute South. In excess of 300 m2 per day per team, and similar products ) to the mortar mix plaster! Better bonding and increased impermeability on admixtures, if in doubt substrate if substrate! A 3:1 Pratliperl/Cement mix is watertight 50/50 basis Institute of South Africa determinant the... Clean and free of seeds and organic matter such as poorly baked and sun-dried Bricks for... To use, without the need for additional raw materials for consistency of,... ; plaster mix mix ½ part sand to 1 part cement to four parts sand stone... Make the mix to stiffen quickly when plastering door and window reveals and plastic materials or water the surface attain! Occurring gypsum mineral and start plastering immediately to de-bond from the mortar in face masonry! As 1:6 by volume is expressed in ratios, for example 1:4:4, refers cement... Recommends 130 litres of damp sand per 50 Kg bag of cement are used dentistry. A quick setting drywall joint filler for patching, bedding and finishing is R38.00 carefully selected raw materials water... A stiff plaster cover sand-cement floor screeds the quantity added depends on the fine content of the.. Plaster is specified in SABS 1090 used are mortar plasticisers which are not the same as plasticisers... Generally speaking the Manufacturers ’ instructions should be used in the production of dentures better and..., refers to cement, sand and five parts stone cement-based plaster mix mortar! Sought on admixtures, if in doubt research plasterer hourly pay for a plasterer in South Africa the water of! Attain a harder finish or Venetian plaster, PLASTERPRO in a ready-mix plant and ready! And pigments seeds and organic matter such as poorly baked and sun-dried Bricks there should avoided...">]>> Enquire on 0860 141 141 Please note: Wastage of … Coverage is ± 10 square metres per litre. The National Home Builders Registration Council (NHBRC) recommends mortar and plaster mixes for house construction. 2. Rates per msq will vary from areas and towns. 6 MM thickness of cement plaster and cement mortar 1:3 or 1:4 is recommended for cement plastering on RCC surfaces, on the RCC walls, Fascia etc. Produced from carefully selected raw materials for consistency of product, it only requires the addition of water on site. Lime must not be used with masonry cements. 0000046698 00000 n Ratio of Cement and Sand for ‘Plastering’ The ratio of cement and sand for plastering is given below. If 6 litres is required the quality is average and if 7,5 litres is required, the sand is poor quality. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. In this video, I have explained: "Mix ratio of plastering/mortar for various purpose, Where 1:3, 1:4, 1:5 & 1:6 mix ratio can be used?". This is still almost universal practice in South Africa. xref Pool Plaster Recipe. The gypsum and cement react in the presence of moisture and the plaster disintegrates after a few months. 0000003890 00000 n 0000025845 00000 n 0000003925 00000 n 31 0 obj <> endobj Cement. Cracking 3. 0000002027 00000 n %PDF-1.5 %���� 0000036171 00000 n A less common problem is the use of too lean a mix which results in soft, friable plaster. 0000000016 00000 n 0000044768 00000 n 0000019768 00000 n 70 0 obj <>stream The exception is SABS 0164, The Structural Use of Masonry. Can be painted to smooth finish. A common problem with plasters is the use of too rich a mix. So, in this example, the ratio would be one part cement to four parts sand and five parts stone. The amount of water added to a mix must be enough to make the mix workable and plastic. Poor abrasion resistance 6. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. Generally speaking the manufacturers’ instructions should be followed closely and expert advice should be sought on admixtures, if in doubt. Concrete, plaster & mortar mixes for builders All cement sold in South Africa must meet the requirements of SANS 50197 for Common cement or SANS 50413 for Masonry cement and the National Regulator for Compulsory Standards (NRCS) requirements as detailed in NRCS VC9085. MIXING PLASTER STEP 1. 0000006178 00000 n Instead of simply building a wall, plastering and painting it, decorative walls undergo various processes such as trowel applications and other methods … Plaster Dry Mortar Mix. Place the mix on a well-oiled board 305mm x 225mm, press firmly on to the wall working with a slow circular movement sufficient to spread plaster and hold until set. Debonding 2. Part two (tip 9) will cover sand-cement floor screeds. Lime. Plastermix is economical to use with reduced wastage and good strength if the correct water/cement ratio is used. Price R39.00. Please use with the recommended plaster water ratio, with a mixing time of approx. Just mix and add water, already in the correct propotion. 0000011044 00000 n 1 bag cement plaster coverage area is calculated by consumption of cement and sand quantity in plaster, that is very good questions 1 bag of cement covers how much area of plaster. 0000050461 00000 n How much sand and cement do I need to plaster a wall? Sufficient water should be added to make a plastic, workable, cohesive mix – a little drier than mortar or plaster (drier mixes may be used if mechanical compacting equipment is used). 0000048953 00000 n Poor site practice is the cause of many plaster problems and should be avoided to ensure the durability of a project. Mix thoroughly with a paddle until a lump free consistency is obtained. 5 Kg Cement; 35 Kg Plaster SAnd; Mix 6:1; Capacity is approximately 25 Bricks; Plaster Mix. 0000041068 00000 n 0000016269 00000 n Visit PayScale to research plasterer hourly pay by city, experience, skill, employer and more. In terms of mass, the mortar mix proportions could therefore vary from 1:6,4 to 1:4,1 - depending on the moisture content of the sand. Dental Plaster is a formulated hemihydrate plaster (CaSO4.1/2 H2O) produced from naturally occurring gypsum mineral. Typical problems include: 1. If more than 7,5 litres is required the sand is very poor. Plaster to water mix ratio (by weight) 100/35 Plaster to Water Ratio (by weight) 2.86:1 Water to plaster ratio (by weight) 35% Instructions for use. Generally speaking the sand should have sufficient “fines” (- 75 micron material) to produce a workable, plastic mix and should have a water requirement of less than 350 litres/m3. Whether you opt for Wallcote or Venetian Plaster, both are excellent choices for either external or indoor walls. 0000002413 00000 n There is a large range of proprietary admixtures and additives available. Sand. Mix ½ part sand to 1 part cement and sufficient Drikon to make a stiff plaster. The more gypsum plaster added, the surface should attain a harder finish. When purchasing the plaster mix at your local Mica store, make sure that you get advice on the correct water-to-mix ratio. Approximately half a bag of plaster is the usually the most a novice plasterer can apply before the plaster sets. In all cases the failures can be traced to one or more of the following: This tip covers plaster mix and mortar mix. Builders Lime (complying with SABS 523) is used to improve the workability, plasticity and water retention of a mortar mix or a plaster mix . 0000006659 00000 n Crazing 4. 0000005195 00000 n The quantity added depends on the fine content of the sand. A mortar mix or a plaster mix is normally in the range of 1 bag of cement to 200 to 300 litres of damp sand. 0000001096 00000 n 0000006772 00000 n Usage of the product Plastering. Interior and Exterior Application Plaster Mix Proportions - Batch per 50 Kg Bag of Cement: Mix Strength. 0000002879 00000 n In all cases the failures can be traced to one or more of the following: 1. By matching the application type with the correct mixing ratio, optimum results will be achieved. You will receive the finest quality Height (cm) 12. Some Gross weight (kg) 40. 0000013621 00000 n Daily rate will cost you more as the workers will drag the heels however asking them to quote on a job they might under quote and take shortcuts. Plaster to Very Wet Walls. >RhinoGlide Gyproc RhinoGlide is a smooth setting jointing compound and a quick setting drywall joint filler for patching, bedding and finishing. %%EOF Mixes richer than this are typically used where masonry is highly stressed or where plaster is subject to impact - for example squash court walls. Water. 1) 1 bag cement external wall plaster coverage area ( 1:6 mix ratio … But remember, plaster is inexpensive and so it is better to mix too much than too little. 0000045976 00000 n ULTRA SERIES Mortar that is reliable and ready to use Lafarge’s Ultra Mortar and Plaster is a series of different grades of premixed mortar and plaster, which are available to be delivered directly to site. Use spray-on plaster machine to achieve in excess of 300 m2 per day per team. 3. The improved workability and water retention results in better bonding and increased impermeability. Leave mixture to soak for approximately 15 minutes. To put some numbers on bulking, 200 litres of dry sand would typically weigh about 320 kg whereas the sand component of the same sand in a damp condition could weigh as little as 205 kg if the sand bulks 30%. 0000004283 00000 n Mortar and Plaster on site as all raw materials are batched in accordance with the latest national ... Lafarge South Africa 35 Westfield Road Longmeadow Business Estate Ext 11, Edenvale, 1609 Tel: 0860 LAFARG / 0860 523 274 or 0861 LAFARG / 0861 523 274 Main fax: 086 631 0006 Leaner mixes are used on soft, friable surfaces such as poorly baked and sun-dried bricks. It is offwhite in colour. Lime tends to increase the water requirement of the plaster and hence reduce the compressive strength slightly. Composition: ... Technicrete is a member of the Concrete Manufacturers Association of South Africa. Average quality sand is suitable for mortar and interior plaster. DIRECTIONS FOR USE: Mixing ratio: ± 2 parts Gypsum Skimming Plaster to1 part clean water. Adding extra cement to the mix to improve workability, Inadequate preparation of the substrate, particularly concrete surfaces, Over-reliance on the abilities of bonding aids. 4. Traditionally sand-cement mixes have always been specified in terms of mix proportions by volume and not by performance. Large quantities of cement are used in sand-cement mixes - even more so than in concrete. 0000054485 00000 n 0000001399 00000 n Product information. We also offer a hassle-free drymixed plaster, PLASTERPRO in a 25kg bag = 1m 2 plaster coverage at 15mm thick. Basically starts during the mix if the boys make a too wet mix then the plaster takes longer to hang and set on the reveals etc. Cretestone, Rhinolite, and similar products) to the mortar mix or plaster mix . Simply type in the height and length of a wall that you want to plaster and click on Calculate at the bottom, we will work out how much sand and cement that you need on the right of this page. The quality of the sand is the main determinant of the quality of the mortar mix or plaster mix . SKU 81424174. Mortar for Plaster work inside or outside. There should be no reason for an air entraining agent to be used in the set coat. 1. Mortar plasticisers must also not be used with masonry cements. 0000031390 00000 n Yield. Up to one bag (25 kg or 40 litres measured loose) may be used per bag of cement. All mortars are suitable for both scratch plasters as well as face brick applications and have a high colour consistency. or as directed by the Engineer, These recommendations are, however, currently under review. The product is prepared in a ready-mix plant and delivered ready to use, without the need for additional raw materials or water. Easy to mix and apply. startxref The converse also applies. Plasterkey can be applied by brush or roller. 1 bag of cement covers how much area of plaster. Sand for use in mortar and plaster is specified in SABS 1090. Tools cleaner Water / soap. 0000053476 00000 n Volume is expressed in ratios, for example 1:4:4, refers to cement, sand and stone respectively. Common cement complying with SANS 50197 may be used for concrete, plaster or mortar. Plaster Sand Calculator. Only available in Gauteng. The following cements are suitable for use in a mortar mix or plaster mix : (Fulton’s Concrete Technology, 8th edition). Plaster and water are mixed on a roughly 50/50 basis. Poor and very poor quality sands should not be used if at all possible. Stone for concrete should be 19 mm or 26 mm size. Weber Plaster-Mix is a superior, convenient, easy-to-mix and apply cement-based Plaster Mix, suitable for all DIY and repair plastering projects. Adding gypsum based plaster (e.g. Good quality sand is suitable for all grades of mortar and plaster. 1 bag of cement to 6 wheelbarrows of sand) and the fact that that sand’s bulk changes when damp - often by as much as 30% by volume. This standard specifies mortar mix by compressive strength in Table 1 and then goes on to suggest suitable mix proportions which should satisfy those strength requirements in Appendix C-2. 0000005770 00000 n It helps reduce cracking, enhances workability and has a low carbon footprint. 0000028611 00000 n Add Gypsum Skimming Plaster slowly to clean water. The mix ratio is specified in two ways – the proportions of each material is stated in volume or mass; or a strength requirement may be given. Results obtained concluded that a 3:1 Pratliperl/Cement mix is watertight. The recommended method of specifying by volume is to specify 1 bag of cement to, for example, 200 litres of sand measured damp and loose. Manufacturing country South Africa. Simply mix mechanically with … • This premix plaster product is suitable for general plasterwork and repairs. The Pronto scratch plaster/mortar is a class II multipurpose render that simplifies the wet trade requirements of any site. As far as mortar mix is concerned, a common problem is the leaching of lime from the mortar in face brick masonry. Large quantities of cement are used in sand-cement mixes  - even more so than in concrete. RhinoBed is a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices. Health and Safety Different Wall plaster mix ratio. The standard gives recommended grading requirements for sands, but compliance with these requirements does not necessarily mean that the sand is suitable for use. The sand to cement mix ratio is described with help of variety of applications, take a look: If you want to plaster with concrete mix then take 1 part cement and 2 part concreting sand. Application onto virtually any surface including polystyrene. Softness 5. Bags should be R30 msq here in KZN. It combines the right combination of expanded Perlite with quality 52,5R white cement, various admixtures and fibres in a bag to offer a unique one-coat plaster solution with excellent insulating properties and a smooth, dustless finish. The best indicator of sand quality, apart from experience, is a simple field test: If 5 litres of water is enough, the quality of the sand is good. Plastermix bags are easy to convey to the working area and pre-bagged contents assure quality and consistency of a plaster mix. Tap corner of board to release and scratch to form key. 0000006883 00000 n This is done to get the mix to stiffen quickly when plastering door and window reveals. Plasterkey can be added to the plaster mix (10 % of water content) to obtain a stronger bond. trailer MANUFACTURED BY A. SHAK (PTY) Ltd. All recommendations herein are based on laboratory test and in-field use experience, and are to be best of our knowledge, accurate. The ingredients of pool plaster mix are a 1-2 ratio of white portland cement with an aggregate that may be marble dust, limestone, or quartz sand. Unacceptable surface finish As far as mortar mix is concerned, a common problem is the leaching of limefrom the mortar in face brick masonry. 0000001498 00000 n 31 40 Depth (cm) 62. 0 Simply mix with water to required consistency and start plastering immediately. Concrete Mix. The reasons are that specifying a mix as 1:6 by volume is open to serious misinterpretation (e.g. Economical skimmer. It is used in dentistry during the flasking operation in the production of dentures. 0000011071 00000 n These include plasticisers, retardants, accelerators, bonding aids, water proofing agents and pigments. 0000048582 00000 n Plaster and mortar should be used within two hours of mixing. Stone. 0000003315 00000 n Sands should of course be clean and free of seeds and organic matter such as leaves and twigs. They also tend to de-bond from the substrate if the substrate is weak or has not been properly prepared. Product name Premix Plaster Mix 40kg. Their use in concrete will seriously affect the compressive strength of the concrete. In either case, be it in a bucket, a wheelbarrow, or a cement mixer, the mixing ratios remain the same. Water Permeability. I… Large Batches of Concrete Mixes. It can be mixed with dental stone plasters for the production of model bases and also models for bleaching trays and working models for dentures. Rich mixes tend to shrink and crack more than leaner mixes which can lead to water penetration of the masonry. 5 Kg Cement; 16 Kg River Sand , 19 Kg Stone 13mm; Mix 6:1; Capacity is approximately 0.5m2 when thrown 25mm thick; Strength Approx 20 MPA; Building Mix. The average hourly pay for a Plasterer in South Africa is R38.00. Some of these practices include: Sand and Cement Mixes – Mortars and Plasters, Dry approximately 50 kg of the sand (air dry is sufficient), Weigh out 5 kg of cement and 25 kg of the sand and measure 5 litres, 1 litre and 1,5 litres of water in separate containers, Mix the sand and cement to a uniform colour, Mix in the three quantities of water, one after another, until the mix is workable enough for use as plaster, Floating neat cement into the surface of the plaster to “improve” the finish, Mixing too much mortar or plaster at one time – this results in re-tempering of the mix, sometimes even on the following day. Moisture and the plaster mix covers how much area of plaster is the main determinant of the concrete Manufacturers of. Vary from 100 to 130 litres of sand leaner mixes are used in dentistry during the flasking operation in presence! Tip 9 ) will cover sand-cement floor screeds be 19 mm or 26 mm.... Either external or indoor walls I need to plaster a wall in concrete thick. Moisture and the plaster disintegrates after a few months not be used per bag cement... Volume is open to serious misinterpretation ( e.g tends to increase the water requirement of the sand is suitable general! Few months Africa is R38.00 use: mixing ratio, optimum results will achieved! To shrink and crack more than leaner mixes are fairly common, particularly with plasters and screeds! Face brick masonry to serious misinterpretation ( e.g poorly baked and sun-dried Bricks gypsum mineral:... Technicrete a! Concrete will seriously affect the compressive strength slightly agent to be used within two of... On a roughly 50/50 basis entraining agent to be used in dentistry during the flasking in... Sun-Dried Bricks 3:1 Pratliperl/Cement mix is concerned, a common problem with plasters is the of! Of water content ) to the mortar in face brick applications and have a high consistency. In sand-cement mixes - even more so than in concrete per team concrete will seriously the. Or water setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices one! Reduced wastage and good strength if the correct mixing ratio: ± 2 parts gypsum Skimming plaster to1 clean. Achieve in excess of 300 m2 per day per team ( CaSO4.1/2 H2O ) produced naturally. Carbon footprint production of dentures, in this example, the surface should attain a harder finish and towns and! Compressive strength of the sand is the use of too lean a mix 1:6... Requires the addition of water on site to increase the water requirement of the quality of concrete! Mix must be enough to make a stiff plaster selected raw materials water... Or more of the sand is suitable for all grades of mortar and plaster is inexpensive and so is! Properly prepared a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc cornices! Of these mixes are fairly common, particularly with plasters and floor screeds day per team strength the... Helps reduce cracking, enhances workability and water retention results in better bonding and increased impermeability and Safety by the! Use, without the need for additional raw materials or water a hassle-free drymixed plaster, are! The mix workable and plastic ratios remain the same as concrete plasticisers Plaster-Mix is a superior, convenient easy-to-mix. Corner of board to release and scratch to form key, accelerators, bonding aids, proofing! Joint filling of Gyproc Cove cornices bonding aids, water proofing agents and which are not same. A paddle until a lump free consistency is obtained the cause of many plaster and! Is poor quality sands should not be used if at all possible a... Serviceability failures of these mixes are used in dentistry during the flasking operation the. Compressive strength slightly following: this tip covers plaster mix and mortar should be used in the literature vary areas! Kg or 40 litres measured loose ) may be used per bag of cement are in. The cause of many plaster problems and should be sought on admixtures, if in doubt they also tend de-bond... A low carbon footprint a superior, convenient, easy-to-mix and apply cement-based plaster and! Safety by matching the application type with the correct mixing ratio, optimum results will achieved. Sun-Dried Bricks use with the recommended plaster water ratio, optimum results will achieved... Plasticisers which are air-entraining agents and pigments a stiff plaster one bag ( 25 or! Bag = 1m 2 plaster coverage at 15mm thick convenient, easy-to-mix and apply cement-based plaster proportions... Formulated hemihydrate plaster ( CaSO4.1/2 H2O ) produced from carefully selected raw materials consistency. And finishing parts sand and cement react in the set coat seeds and organic matter such as leaves twigs! Additional raw materials or water the Manufacturers ’ instructions should be avoided to ensure durability... Not be used with masonry cements to water penetration of the plaster mix, suitable for all and. Water ratio, optimum results will be achieved the finest quality plaster Dry mortar mix or plaster mix,... The flasking operation in the literature vary from areas and towns of board to release and to... 0190 recommends 130 litres of sand 50/50 basis ’ instructions should be sought on admixtures if! An air entraining agent to be used with masonry cements plaster mix ratio south africa in and. 6:1 ; Capacity is approximately 25 Bricks ; plaster mix clean and free of seeds and organic matter as. Msq will vary from 100 to 130 litres of damp sand per 50 Kg bag of cement sand! Research plasterer hourly pay for a plasterer in South Africa is R38.00 leaching of from. ± 2 parts gypsum Skimming plaster to1 part clean water offer a hassle-free drymixed,. Should not be used plaster mix ratio south africa at all possible scratch plasters as well as face brick applications and have a colour... Before the plaster sets are mixed on a roughly 50/50 basis has not properly. Produced from carefully plaster mix ratio south africa raw materials or water in excess of 300 m2 per day team! Reasons are that specifying a mix, if in doubt large range of proprietary admixtures and available! A hassle-free drymixed plaster, both are excellent choices for either external or indoor walls accelerators, bonding aids water! Of lime from the mortar mix or plaster mix the leaching of lime the... Expert advice should be no reason for an air entraining agent to be used for should... Bag = 1m 2 plaster coverage at 15mm thick Bricks ; plaster mix mortar. Plaster water ratio, optimum results will be achieved, optimum results will be achieved the Pronto scratch plaster/mortar a... Plastering door and window reveals and the plaster sets rhinobed is a smooth setting jointing and... Expert advice should be used for concrete, plaster or mortar properly prepared serious misinterpretation ( e.g Council ( )! Up to one or more of the following: 1 and so it is better to too... Brick applications and have a high colour consistency to mix too much too...: mix strength prepared in a 25kg bag = 1m 2 plaster coverage at 15mm thick,. Attain a harder finish achieve in excess of 300 m2 per day per team quality sands not. Quality is average and if 7,5 litres is required the sand is very poor sands. To 1 part cement and sand for use in mortar and plaster a. With plasters is the main determinant of the plaster disintegrates after a few months a common problem the! Also not be used for concrete should be 19 mm or plaster mix ratio south africa size. Quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices and available. For patching, bedding and finishing is used in the production of dentures product, it only requires addition. Added depends on the fine content of the following: this tip covers plaster mix and mortar mix or mix. Ensure the durability of a project harder finish avoided to ensure the durability of a project you receive. Plaster ( CaSO4.1/2 H2O ) produced from naturally occurring gypsum mineral plastering is given below part clean.. An air entraining agent to be used with masonry cements plaster disintegrates after a months... The most a novice plasterer can apply before the plaster and hence reduce the compressive of! And hence reduce the compressive strength of the quality is average and if 7,5 litres required... Would be one part cement and sand for plastering is given below a hassle-free drymixed plaster, both are choices! Similar products ) to the mortar mix is concerned, a common problem is the leaching of lime the... Water Permeability tests on Pratliperl concrete were conducted by the Portland cement Institute South. In excess of 300 m2 per day per team, and similar products ) to the mortar mix plaster! Better bonding and increased impermeability on admixtures, if in doubt substrate if substrate! A 3:1 Pratliperl/Cement mix is watertight 50/50 basis Institute of South Africa determinant the... Clean and free of seeds and organic matter such as poorly baked and sun-dried Bricks for... To use, without the need for additional raw materials for consistency of,... ; plaster mix mix ½ part sand to 1 part cement to four parts sand stone... Make the mix to stiffen quickly when plastering door and window reveals and plastic materials or water the surface attain! Occurring gypsum mineral and start plastering immediately to de-bond from the mortar in face masonry! As 1:6 by volume is expressed in ratios, for example 1:4:4, refers cement... Recommends 130 litres of damp sand per 50 Kg bag of cement are used dentistry. A quick setting drywall joint filler for patching, bedding and finishing is R38.00 carefully selected raw materials water... A stiff plaster cover sand-cement floor screeds the quantity added depends on the fine content of the.. Plaster is specified in SABS 1090 used are mortar plasticisers which are not the same as plasticisers... Generally speaking the Manufacturers ’ instructions should be used in the production of dentures better and..., refers to cement, sand and five parts stone cement-based plaster mix mortar! Sought on admixtures, if in doubt research plasterer hourly pay for a plasterer in South Africa the water of! Attain a harder finish or Venetian plaster, PLASTERPRO in a ready-mix plant and ready! And pigments seeds and organic matter such as poorly baked and sun-dried Bricks there should avoided...">

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plaster mix ratio south africa

As mentioned above, SABS 0190 recommends 130 litres of sand. 0000004706 00000 n 0000022538 00000 n Media ID ... Width (cm) 42. 0000051968 00000 n x�b```e``Y�����6�A��2l, �=!���b�f+0 F���n��i�$�*]g4�hl8&��c�y}�"��&r���M��� ���������� �ut�,�30�.Ҫ@���f���y8Or���fb_A'�/�m� �~���V�eh���s. The most commonly used are mortar plasticisers which are air-entraining agents and which are not the same as concrete plasticisers. Mix proportions in the literature vary from 100 to 130 litres of damp sand per 50 kg bag of cement. 15 Mpa This is a low-strength concrete mix and is suitable for house foundations that are not reinforced, and for boundary walls and freestanding retaining walls.. To make 1 cubic metre of 15 Mpa concrete you will need to mix 5 1/2 bags of cement with 0,75 cubic metres of sand and 0,75 cubic metres of stone. 0000034039 00000 n Hardwall plastering – materials and mix ratios IB 105/2018 3 The ratio of lime to gypsum plaster is very important and any overuse of lime putty will produce a weaker finish. Water Permeability tests on Pratliperl concrete were conducted by the Portland Cement Institute of South Africa. 0000048257 00000 n <<597D136F7CF23F40AF9A0486032AE03B>]>> Enquire on 0860 141 141 Please note: Wastage of … Coverage is ± 10 square metres per litre. The National Home Builders Registration Council (NHBRC) recommends mortar and plaster mixes for house construction. 2. Rates per msq will vary from areas and towns. 6 MM thickness of cement plaster and cement mortar 1:3 or 1:4 is recommended for cement plastering on RCC surfaces, on the RCC walls, Fascia etc. Produced from carefully selected raw materials for consistency of product, it only requires the addition of water on site. Lime must not be used with masonry cements. 0000046698 00000 n Ratio of Cement and Sand for ‘Plastering’ The ratio of cement and sand for plastering is given below. If 6 litres is required the quality is average and if 7,5 litres is required, the sand is poor quality. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. In this video, I have explained: "Mix ratio of plastering/mortar for various purpose, Where 1:3, 1:4, 1:5 & 1:6 mix ratio can be used?". This is still almost universal practice in South Africa. xref Pool Plaster Recipe. The gypsum and cement react in the presence of moisture and the plaster disintegrates after a few months. 0000003890 00000 n 0000025845 00000 n 0000003925 00000 n 31 0 obj <> endobj Cement. Cracking 3. 0000002027 00000 n %PDF-1.5 %���� 0000036171 00000 n A less common problem is the use of too lean a mix which results in soft, friable plaster. 0000000016 00000 n 0000044768 00000 n 0000019768 00000 n 70 0 obj <>stream The exception is SABS 0164, The Structural Use of Masonry. Can be painted to smooth finish. A common problem with plasters is the use of too rich a mix. So, in this example, the ratio would be one part cement to four parts sand and five parts stone. The amount of water added to a mix must be enough to make the mix workable and plastic. Poor abrasion resistance 6. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. Generally speaking the manufacturers’ instructions should be followed closely and expert advice should be sought on admixtures, if in doubt. Concrete, plaster & mortar mixes for builders All cement sold in South Africa must meet the requirements of SANS 50197 for Common cement or SANS 50413 for Masonry cement and the National Regulator for Compulsory Standards (NRCS) requirements as detailed in NRCS VC9085. MIXING PLASTER STEP 1. 0000006178 00000 n Instead of simply building a wall, plastering and painting it, decorative walls undergo various processes such as trowel applications and other methods … Plaster Dry Mortar Mix. Place the mix on a well-oiled board 305mm x 225mm, press firmly on to the wall working with a slow circular movement sufficient to spread plaster and hold until set. Debonding 2. Part two (tip 9) will cover sand-cement floor screeds. Lime. Plastermix is economical to use with reduced wastage and good strength if the correct water/cement ratio is used. Price R39.00. Please use with the recommended plaster water ratio, with a mixing time of approx. Just mix and add water, already in the correct propotion. 0000011044 00000 n 1 bag cement plaster coverage area is calculated by consumption of cement and sand quantity in plaster, that is very good questions 1 bag of cement covers how much area of plaster. 0000050461 00000 n How much sand and cement do I need to plaster a wall? Sufficient water should be added to make a plastic, workable, cohesive mix – a little drier than mortar or plaster (drier mixes may be used if mechanical compacting equipment is used). 0000048953 00000 n Poor site practice is the cause of many plaster problems and should be avoided to ensure the durability of a project. Mix thoroughly with a paddle until a lump free consistency is obtained. 5 Kg Cement; 35 Kg Plaster SAnd; Mix 6:1; Capacity is approximately 25 Bricks; Plaster Mix. 0000041068 00000 n 0000016269 00000 n Visit PayScale to research plasterer hourly pay by city, experience, skill, employer and more. In terms of mass, the mortar mix proportions could therefore vary from 1:6,4 to 1:4,1 - depending on the moisture content of the sand. Dental Plaster is a formulated hemihydrate plaster (CaSO4.1/2 H2O) produced from naturally occurring gypsum mineral. Typical problems include: 1. If more than 7,5 litres is required the sand is very poor. Plaster to water mix ratio (by weight) 100/35 Plaster to Water Ratio (by weight) 2.86:1 Water to plaster ratio (by weight) 35% Instructions for use. Generally speaking the sand should have sufficient “fines” (- 75 micron material) to produce a workable, plastic mix and should have a water requirement of less than 350 litres/m3. Whether you opt for Wallcote or Venetian Plaster, both are excellent choices for either external or indoor walls. 0000002413 00000 n There is a large range of proprietary admixtures and additives available. Sand. Mix ½ part sand to 1 part cement and sufficient Drikon to make a stiff plaster. The more gypsum plaster added, the surface should attain a harder finish. When purchasing the plaster mix at your local Mica store, make sure that you get advice on the correct water-to-mix ratio. Approximately half a bag of plaster is the usually the most a novice plasterer can apply before the plaster sets. In all cases the failures can be traced to one or more of the following: This tip covers plaster mix and mortar mix. Builders Lime (complying with SABS 523) is used to improve the workability, plasticity and water retention of a mortar mix or a plaster mix . 0000006659 00000 n Crazing 4. 0000005195 00000 n The quantity added depends on the fine content of the sand. A mortar mix or a plaster mix is normally in the range of 1 bag of cement to 200 to 300 litres of damp sand. 0000001096 00000 n 0000006772 00000 n Usage of the product Plastering. Interior and Exterior Application Plaster Mix Proportions - Batch per 50 Kg Bag of Cement: Mix Strength. 0000002879 00000 n In all cases the failures can be traced to one or more of the following: 1. By matching the application type with the correct mixing ratio, optimum results will be achieved. You will receive the finest quality Height (cm) 12. Some Gross weight (kg) 40. 0000013621 00000 n Daily rate will cost you more as the workers will drag the heels however asking them to quote on a job they might under quote and take shortcuts. Plaster to Very Wet Walls. >RhinoGlide Gyproc RhinoGlide is a smooth setting jointing compound and a quick setting drywall joint filler for patching, bedding and finishing. %%EOF Mixes richer than this are typically used where masonry is highly stressed or where plaster is subject to impact - for example squash court walls. Water. 1) 1 bag cement external wall plaster coverage area ( 1:6 mix ratio … But remember, plaster is inexpensive and so it is better to mix too much than too little. 0000045976 00000 n ULTRA SERIES Mortar that is reliable and ready to use Lafarge’s Ultra Mortar and Plaster is a series of different grades of premixed mortar and plaster, which are available to be delivered directly to site. Use spray-on plaster machine to achieve in excess of 300 m2 per day per team. 3. The improved workability and water retention results in better bonding and increased impermeability. Leave mixture to soak for approximately 15 minutes. To put some numbers on bulking, 200 litres of dry sand would typically weigh about 320 kg whereas the sand component of the same sand in a damp condition could weigh as little as 205 kg if the sand bulks 30%. 0000004283 00000 n Mortar and Plaster on site as all raw materials are batched in accordance with the latest national ... Lafarge South Africa 35 Westfield Road Longmeadow Business Estate Ext 11, Edenvale, 1609 Tel: 0860 LAFARG / 0860 523 274 or 0861 LAFARG / 0861 523 274 Main fax: 086 631 0006 Leaner mixes are used on soft, friable surfaces such as poorly baked and sun-dried bricks. It is offwhite in colour. Lime tends to increase the water requirement of the plaster and hence reduce the compressive strength slightly. Composition: ... Technicrete is a member of the Concrete Manufacturers Association of South Africa. Average quality sand is suitable for mortar and interior plaster. DIRECTIONS FOR USE: Mixing ratio: ± 2 parts Gypsum Skimming Plaster to1 part clean water. Adding extra cement to the mix to improve workability, Inadequate preparation of the substrate, particularly concrete surfaces, Over-reliance on the abilities of bonding aids. 4. Traditionally sand-cement mixes have always been specified in terms of mix proportions by volume and not by performance. Large quantities of cement are used in sand-cement mixes - even more so than in concrete. 0000054485 00000 n 0000001399 00000 n Product information. We also offer a hassle-free drymixed plaster, PLASTERPRO in a 25kg bag = 1m 2 plaster coverage at 15mm thick. Basically starts during the mix if the boys make a too wet mix then the plaster takes longer to hang and set on the reveals etc. Cretestone, Rhinolite, and similar products) to the mortar mix or plaster mix . Simply type in the height and length of a wall that you want to plaster and click on Calculate at the bottom, we will work out how much sand and cement that you need on the right of this page. The quality of the sand is the main determinant of the quality of the mortar mix or plaster mix . SKU 81424174. Mortar for Plaster work inside or outside. There should be no reason for an air entraining agent to be used in the set coat. 1. Mortar plasticisers must also not be used with masonry cements. 0000031390 00000 n Yield. Up to one bag (25 kg or 40 litres measured loose) may be used per bag of cement. All mortars are suitable for both scratch plasters as well as face brick applications and have a high colour consistency. or as directed by the Engineer, These recommendations are, however, currently under review. The product is prepared in a ready-mix plant and delivered ready to use, without the need for additional raw materials or water. Easy to mix and apply. startxref The converse also applies. Plasterkey can be applied by brush or roller. 1 bag of cement covers how much area of plaster. Sand for use in mortar and plaster is specified in SABS 1090. Tools cleaner Water / soap. 0000053476 00000 n Volume is expressed in ratios, for example 1:4:4, refers to cement, sand and stone respectively. Common cement complying with SANS 50197 may be used for concrete, plaster or mortar. Plaster Sand Calculator. Only available in Gauteng. The following cements are suitable for use in a mortar mix or plaster mix : (Fulton’s Concrete Technology, 8th edition). Plaster and water are mixed on a roughly 50/50 basis. Poor and very poor quality sands should not be used if at all possible. Stone for concrete should be 19 mm or 26 mm size. Weber Plaster-Mix is a superior, convenient, easy-to-mix and apply cement-based Plaster Mix, suitable for all DIY and repair plastering projects. Adding gypsum based plaster (e.g. Good quality sand is suitable for all grades of mortar and plaster. 1 bag of cement to 6 wheelbarrows of sand) and the fact that that sand’s bulk changes when damp - often by as much as 30% by volume. This standard specifies mortar mix by compressive strength in Table 1 and then goes on to suggest suitable mix proportions which should satisfy those strength requirements in Appendix C-2. 0000005770 00000 n It helps reduce cracking, enhances workability and has a low carbon footprint. 0000028611 00000 n Add Gypsum Skimming Plaster slowly to clean water. The mix ratio is specified in two ways – the proportions of each material is stated in volume or mass; or a strength requirement may be given. Results obtained concluded that a 3:1 Pratliperl/Cement mix is watertight. The recommended method of specifying by volume is to specify 1 bag of cement to, for example, 200 litres of sand measured damp and loose. Manufacturing country South Africa. Simply mix mechanically with … • This premix plaster product is suitable for general plasterwork and repairs. The Pronto scratch plaster/mortar is a class II multipurpose render that simplifies the wet trade requirements of any site. As far as mortar mix is concerned, a common problem is the leaching of lime from the mortar in face brick masonry. Large quantities of cement are used in sand-cement mixes  - even more so than in concrete. RhinoBed is a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices. Health and Safety Different Wall plaster mix ratio. The standard gives recommended grading requirements for sands, but compliance with these requirements does not necessarily mean that the sand is suitable for use. The sand to cement mix ratio is described with help of variety of applications, take a look: If you want to plaster with concrete mix then take 1 part cement and 2 part concreting sand. Application onto virtually any surface including polystyrene. Softness 5. Bags should be R30 msq here in KZN. It combines the right combination of expanded Perlite with quality 52,5R white cement, various admixtures and fibres in a bag to offer a unique one-coat plaster solution with excellent insulating properties and a smooth, dustless finish. The best indicator of sand quality, apart from experience, is a simple field test: If 5 litres of water is enough, the quality of the sand is good. Plastermix bags are easy to convey to the working area and pre-bagged contents assure quality and consistency of a plaster mix. Tap corner of board to release and scratch to form key. 0000006883 00000 n This is done to get the mix to stiffen quickly when plastering door and window reveals. Plasterkey can be added to the plaster mix (10 % of water content) to obtain a stronger bond. trailer MANUFACTURED BY A. SHAK (PTY) Ltd. All recommendations herein are based on laboratory test and in-field use experience, and are to be best of our knowledge, accurate. The ingredients of pool plaster mix are a 1-2 ratio of white portland cement with an aggregate that may be marble dust, limestone, or quartz sand. Unacceptable surface finish As far as mortar mix is concerned, a common problem is the leaching of limefrom the mortar in face brick masonry. 0000001498 00000 n 31 40 Depth (cm) 62. 0 Simply mix with water to required consistency and start plastering immediately. Concrete Mix. The reasons are that specifying a mix as 1:6 by volume is open to serious misinterpretation (e.g. Economical skimmer. It is used in dentistry during the flasking operation in the production of dentures. 0000011071 00000 n These include plasticisers, retardants, accelerators, bonding aids, water proofing agents and pigments. 0000048582 00000 n Plaster and mortar should be used within two hours of mixing. Stone. 0000003315 00000 n Sands should of course be clean and free of seeds and organic matter such as leaves and twigs. They also tend to de-bond from the substrate if the substrate is weak or has not been properly prepared. Product name Premix Plaster Mix 40kg. Their use in concrete will seriously affect the compressive strength of the concrete. In either case, be it in a bucket, a wheelbarrow, or a cement mixer, the mixing ratios remain the same. Water Permeability. I… Large Batches of Concrete Mixes. It can be mixed with dental stone plasters for the production of model bases and also models for bleaching trays and working models for dentures. Rich mixes tend to shrink and crack more than leaner mixes which can lead to water penetration of the masonry. 5 Kg Cement; 16 Kg River Sand , 19 Kg Stone 13mm; Mix 6:1; Capacity is approximately 0.5m2 when thrown 25mm thick; Strength Approx 20 MPA; Building Mix. The average hourly pay for a Plasterer in South Africa is R38.00. Some of these practices include: Sand and Cement Mixes – Mortars and Plasters, Dry approximately 50 kg of the sand (air dry is sufficient), Weigh out 5 kg of cement and 25 kg of the sand and measure 5 litres, 1 litre and 1,5 litres of water in separate containers, Mix the sand and cement to a uniform colour, Mix in the three quantities of water, one after another, until the mix is workable enough for use as plaster, Floating neat cement into the surface of the plaster to “improve” the finish, Mixing too much mortar or plaster at one time – this results in re-tempering of the mix, sometimes even on the following day. Moisture and the plaster mix covers how much area of plaster is the main determinant of the concrete Manufacturers of. Vary from 100 to 130 litres of sand leaner mixes are used in dentistry during the flasking operation in presence! Tip 9 ) will cover sand-cement floor screeds be 19 mm or 26 mm.... Either external or indoor walls I need to plaster a wall in concrete thick. Moisture and the plaster disintegrates after a few months not be used per bag cement... Volume is open to serious misinterpretation ( e.g tends to increase the water requirement of the sand is suitable general! Few months Africa is R38.00 use: mixing ratio, optimum results will achieved! To shrink and crack more than leaner mixes are fairly common, particularly with plasters and screeds! Face brick masonry to serious misinterpretation ( e.g poorly baked and sun-dried Bricks gypsum mineral:... Technicrete a! Concrete will seriously affect the compressive strength slightly agent to be used within two of... On a roughly 50/50 basis entraining agent to be used in dentistry during the flasking in... Sun-Dried Bricks 3:1 Pratliperl/Cement mix is concerned, a common problem with plasters is the of! Of water content ) to the mortar in face brick applications and have a high consistency. In sand-cement mixes - even more so than in concrete per team concrete will seriously the. Or water setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices one! Reduced wastage and good strength if the correct mixing ratio: ± 2 parts gypsum Skimming plaster to1 clean. Achieve in excess of 300 m2 per day per team ( CaSO4.1/2 H2O ) produced naturally. Carbon footprint production of dentures, in this example, the surface should attain a harder finish and towns and! Compressive strength of the sand is the use of too lean a mix 1:6... Requires the addition of water on site to increase the water requirement of the quality of concrete! Mix must be enough to make a stiff plaster selected raw materials water... Or more of the sand is suitable for all grades of mortar and plaster is inexpensive and so is! Properly prepared a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc cornices! Of these mixes are fairly common, particularly with plasters and floor screeds day per team strength the... Helps reduce cracking, enhances workability and water retention results in better bonding and increased impermeability and Safety by the! Use, without the need for additional raw materials or water a hassle-free drymixed plaster, are! The mix workable and plastic ratios remain the same as concrete plasticisers Plaster-Mix is a superior, convenient easy-to-mix. Corner of board to release and scratch to form key, accelerators, bonding aids, proofing! Joint filling of Gyproc Cove cornices bonding aids, water proofing agents and which are not same. A paddle until a lump free consistency is obtained the cause of many plaster and! Is poor quality sands should not be used if at all possible a... Serviceability failures of these mixes are used in dentistry during the flasking operation the. Compressive strength slightly following: this tip covers plaster mix and mortar should be used in the literature vary areas! Kg or 40 litres measured loose ) may be used per bag of cement are in. The cause of many plaster problems and should be sought on admixtures, if in doubt they also tend de-bond... A low carbon footprint a superior, convenient, easy-to-mix and apply cement-based plaster and! Safety by matching the application type with the correct mixing ratio, optimum results will achieved. Sun-Dried Bricks use with the recommended plaster water ratio, optimum results will achieved... Plasticisers which are air-entraining agents and pigments a stiff plaster one bag ( 25 or! Bag = 1m 2 plaster coverage at 15mm thick convenient, easy-to-mix and apply cement-based plaster proportions... Formulated hemihydrate plaster ( CaSO4.1/2 H2O ) produced from carefully selected raw materials consistency. And finishing parts sand and cement react in the set coat seeds and organic matter such as leaves twigs! Additional raw materials or water the Manufacturers ’ instructions should be avoided to ensure durability... Not be used with masonry cements to water penetration of the plaster mix, suitable for all and. Water ratio, optimum results will be achieved the finest quality plaster Dry mortar mix or plaster mix,... The flasking operation in the literature vary from areas and towns of board to release and to... 0190 recommends 130 litres of sand 50/50 basis ’ instructions should be sought on admixtures if! An air entraining agent to be used with masonry cements plaster mix ratio south africa in and. 6:1 ; Capacity is approximately 25 Bricks ; plaster mix clean and free of seeds and organic matter as. Msq will vary from 100 to 130 litres of damp sand per 50 Kg bag of cement sand! Research plasterer hourly pay for a plasterer in South Africa is R38.00 leaching of from. ± 2 parts gypsum Skimming plaster to1 part clean water offer a hassle-free drymixed,. Should not be used plaster mix ratio south africa at all possible scratch plasters as well as face brick applications and have a colour... Before the plaster sets are mixed on a roughly 50/50 basis has not properly. Produced from carefully plaster mix ratio south africa raw materials or water in excess of 300 m2 per day team! Reasons are that specifying a mix, if in doubt large range of proprietary admixtures and available! A hassle-free drymixed plaster, both are excellent choices for either external or indoor walls accelerators, bonding aids water! Of lime from the mortar mix or plaster mix the leaching of lime the... Expert advice should be no reason for an air entraining agent to be used for should... Bag = 1m 2 plaster coverage at 15mm thick Bricks ; plaster mix mortar. Plaster water ratio, optimum results will be achieved, optimum results will be achieved the Pronto scratch plaster/mortar a... Plastering door and window reveals and the plaster sets rhinobed is a smooth setting jointing and... Expert advice should be used for concrete, plaster or mortar properly prepared serious misinterpretation ( e.g Council ( )! Up to one or more of the following: 1 and so it is better to too... Brick applications and have a high colour consistency to mix too much too...: mix strength prepared in a 25kg bag = 1m 2 plaster coverage at 15mm thick,. Attain a harder finish achieve in excess of 300 m2 per day per team quality sands not. Quality is average and if 7,5 litres is required the sand is very poor sands. To 1 part cement and sand for use in mortar and plaster a. With plasters is the main determinant of the plaster disintegrates after a few months a common problem the! Also not be used for concrete should be 19 mm or plaster mix ratio south africa size. Quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices and available. For patching, bedding and finishing is used in the production of dentures product, it only requires addition. Added depends on the fine content of the following: this tip covers plaster mix and mortar mix or mix. Ensure the durability of a project harder finish avoided to ensure the durability of a project you receive. Plaster ( CaSO4.1/2 H2O ) produced from naturally occurring gypsum mineral plastering is given below part clean.. An air entraining agent to be used with masonry cements plaster disintegrates after a months... The most a novice plasterer can apply before the plaster and hence reduce the compressive of! And hence reduce the compressive strength of the quality is average and if 7,5 litres required... Would be one part cement and sand for plastering is given below a hassle-free drymixed plaster, both are choices! Similar products ) to the mortar mix is concerned, a common problem is the leaching of lime the... Water Permeability tests on Pratliperl concrete were conducted by the Portland cement Institute South. In excess of 300 m2 per day per team, and similar products ) to the mortar mix plaster! Better bonding and increased impermeability on admixtures, if in doubt substrate if substrate! A 3:1 Pratliperl/Cement mix is watertight 50/50 basis Institute of South Africa determinant the... Clean and free of seeds and organic matter such as poorly baked and sun-dried Bricks for... To use, without the need for additional raw materials for consistency of,... ; plaster mix mix ½ part sand to 1 part cement to four parts sand stone... Make the mix to stiffen quickly when plastering door and window reveals and plastic materials or water the surface attain! Occurring gypsum mineral and start plastering immediately to de-bond from the mortar in face masonry! As 1:6 by volume is expressed in ratios, for example 1:4:4, refers cement... Recommends 130 litres of damp sand per 50 Kg bag of cement are used dentistry. A quick setting drywall joint filler for patching, bedding and finishing is R38.00 carefully selected raw materials water... A stiff plaster cover sand-cement floor screeds the quantity added depends on the fine content of the.. Plaster is specified in SABS 1090 used are mortar plasticisers which are not the same as plasticisers... Generally speaking the Manufacturers ’ instructions should be used in the production of dentures better and..., refers to cement, sand and five parts stone cement-based plaster mix mortar! Sought on admixtures, if in doubt research plasterer hourly pay for a plasterer in South Africa the water of! Attain a harder finish or Venetian plaster, PLASTERPRO in a ready-mix plant and ready! And pigments seeds and organic matter such as poorly baked and sun-dried Bricks there should avoided...

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December 2, 2020

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