2. Part two (tip 9) will cover sand-cement floor screeds. Composition: ... Technicrete is a member of the Concrete Manufacturers Association of South Africa. This is done to get the mix to stiffen quickly when plastering door and window reveals. It is used in dentistry during the flasking operation in the production of dentures. 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%. Add Gypsum Skimming Plaster slowly to clean water. Generally speaking the manufacturers’ instructions should be followed closely and expert advice should be sought on admixtures, if in doubt. Stone. Tap corner of board to release and scratch to form key. 0000001399 00000 n How much sand and cement do I need to plaster a wall? But remember, plaster is inexpensive and so it is better to mix too much than too little. 0000025845 00000 n Plaster Dry Mortar Mix. <<597D136F7CF23F40AF9A0486032AE03B>]>> So, in this example, the ratio would be one part cement to four parts sand and five parts stone. Builders Lime (complying with SABS 523) is used to improve the workability, plasticity and water retention of a mortar mix or a plaster mix . 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. Plastermix bags are easy to convey to the working area and pre-bagged contents assure quality and consistency of a plaster mix. 0000034039 00000 n 0000048582 00000 n %%EOF This is still almost universal practice in South Africa. Only available in Gauteng. 0000004706 00000 n Plaster to Very Wet Walls. 0000053476 00000 n Leaner mixes are used on soft, friable surfaces such as poorly baked and sun-dried bricks. Crazing 4. 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. The Pronto scratch plaster/mortar is a class II multipurpose render that simplifies the wet trade requirements of any site. Product name Premix Plaster Mix 40kg. 0000001096 00000 n The quality of the sand is the main determinant of the quality of the mortar mix or plaster mix . Media ID ... Width (cm) 42. Enquire on 0860 141 141 Please note: Wastage of … 0000002413 00000 n 3. Mortar for Plaster work inside or outside. Tools cleaner Water / soap. 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. Health and Safety 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. There should be no reason for an air entraining agent to be used in the set coat. SKU 81424174. Whether you opt for Wallcote or Venetian Plaster, both are excellent choices for either external or indoor walls. Sand for use in mortar and plaster is specified in SABS 1090. 0000036171 00000 n • This premix plaster product is suitable for general plasterwork and repairs. Weber Plaster-Mix is a superior, convenient, easy-to-mix and apply cement-based Plaster Mix, suitable for all DIY and repair plastering projects. 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 Cement. Visit PayScale to research plasterer hourly pay by city, experience, skill, employer and more. Plaster and mortar should be used within two hours of mixing. Poor site practice is the cause of many plaster problems and should be avoided to ensure the durability of a project. It is offwhite in colour. 0000011071 00000 n Leave mixture to soak for approximately 15 minutes. Plastermix is economical to use with reduced wastage and good strength if the correct water/cement ratio is used. 0000048953 00000 n Common cement complying with SANS 50197 may be used for concrete, plaster or mortar. 0000006772 00000 n Just mix and add water, already in the correct propotion. The average hourly pay for a Plasterer in South Africa is R38.00. Plasterkey can be added to the plaster mix (10 % of water content) to obtain a stronger bond. MIXING PLASTER STEP 1. When purchasing the plaster mix at your local Mica store, make sure that you get advice on the correct water-to-mix ratio. Manufacturing country South Africa. 0000003925 00000 n As far as mortar mix is concerned, a common problem is the leaching of lime from the mortar in face brick masonry. 0000054485 00000 n Instead of simply building a wall, plastering and painting it, decorative walls undergo various processes such as trowel applications and other methods … Height (cm) 12. Water Permeability. Simply mix mechanically with … 1) 1 bag cement external wall plaster coverage area ( 1:6 mix ratio … Water Permeability tests on Pratliperl concrete were conducted by the Portland Cement Institute of South Africa. 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. 0 Up to one bag (25 kg or 40 litres measured loose) may be used per bag of cement. 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. Bags should be 70 0 obj <>stream 1. 0000046698 00000 n Rich mixes tend to shrink and crack more than leaner mixes which can lead to water penetration of the masonry. Their use in concrete will seriously affect the compressive strength of the concrete. Please use with the recommended plaster water ratio, with a mixing time of approx. Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. 0000005770 00000 n Mix thoroughly with a paddle until a lump free consistency is obtained. Cracking 3. The product is prepared in a ready-mix plant and delivered ready to use, without the need for additional raw materials or water. Debonding 2. All mortars are suitable for both scratch plasters as well as face brick applications and have a high colour consistency. 0000013621 00000 n Mix ½ part sand to 1 part cement and sufficient Drikon to make a stiff plaster. Good quality sand is suitable for all grades of mortar and plaster. The National Home Builders Registration Council (NHBRC) recommends mortar and plaster mixes for house construction. Plaster Sand Calculator. These recommendations are, however, currently under review. Mix proportions in the literature vary from 100 to 130 litres of damp sand per 50 kg bag of cement. 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. 0000050461 00000 n Plasterkey can be applied by brush or roller. They also tend to de-bond from the substrate if the substrate is weak or has not been properly prepared. 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. Product information. There is a large range of proprietary admixtures and additives available. 0000003890 00000 n Can be painted to smooth finish. 0000004283 00000 n >RhinoGlide Gyproc RhinoGlide is a smooth setting jointing compound and a quick setting drywall joint filler for patching, bedding and finishing. 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. 4. Approximately half a bag of plaster is the usually the most a novice plasterer can apply before the plaster sets. The quantity added depends on the fine content of the sand. Softness 5. 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. 31 40 %PDF-1.5 %���� If 6 litres is required the quality is average and if 7,5 litres is required, the sand is poor quality. Coverage is ± 10 square metres per litre. 0000019768 00000 n 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. 0000016269 00000 n A less common problem is the use of too lean a mix which results in soft, friable plaster. 0000002879 00000 n Some Different Wall plaster mix ratio. Ratio of Cement and Sand for ‘Plastering’ The ratio of cement and sand for plastering is given below. Sand. 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. Traditionally sand-cement mixes have always been specified in terms of mix proportions by volume and not by performance. Produced from carefully selected raw materials for consistency of product, it only requires the addition of water on site. 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. Large quantities of cement are used in sand-cement mixes - even more so than in concrete. 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. Gross weight (kg) 40. 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. 0000011044 00000 n Results obtained concluded that a 3:1 Pratliperl/Cement mix is watertight. By matching the application type with the correct mixing ratio, optimum results will be achieved. 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. In either case, be it in a bucket, a wheelbarrow, or a cement mixer, the mixing ratios remain the same. Depth (cm) 62. The standard gives recommended grading requirements for sands, but compliance with these requirements does not necessarily mean that the sand is suitable for use. Stone for concrete should be 19 mm or 26 mm size. Pool Plaster Recipe. 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. Poor and very poor quality sands should not be used if at all possible. 1 bag of cement covers how much area of plaster. 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). 0000006178 00000 n 0000028611 00000 n 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. Easy to mix and apply. 0000041068 00000 n The most commonly used are mortar plasticisers which are air-entraining agents and which are not the same as concrete plasticisers. 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. If more than 7,5 litres is required the sand is very poor. 0000006883 00000 n Use spray-on plaster machine to achieve in excess of 300 m2 per day per team. 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. Economical skimmer. 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. The more gypsum plaster added, the surface should attain a harder finish. 0000005195 00000 n Rates per msq will vary from areas and towns. Concrete Mix. We also offer a hassle-free drymixed plaster, PLASTERPRO in a 25kg bag = 1m 2 plaster coverage at 15mm thick. The exception is SABS 0164, The Structural Use of Masonry. Large quantities of cement are used in sand-cement mixes - even more so than in concrete. Mortar plasticisers must also not be used with masonry cements. Water. startxref trailer Usage of the product Plastering. 31 0 obj <> endobj xref or as directed by the Engineer, 0000002027 00000 n 5 Kg Cement; 35 Kg Plaster SAnd; Mix 6:1; Capacity is approximately 25 Bricks; Plaster Mix. 0000051968 00000 n Lime must not be used with masonry cements. Large Batches of Concrete Mixes. Adding gypsum based plaster (e.g. The amount of water added to a mix must be enough to make the mix workable and plastic. Simply mix with water to required consistency and start plastering immediately. Typical problems include: 1. In all cases the failures can be traced to one or more of the following: 1. As mentioned above, SABS 0190 recommends 130 litres of sand. Plaster and water are mixed on a roughly 50/50 basis. 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. Average quality sand is suitable for mortar and interior plaster. Mixes richer than this are typically used where masonry is highly stressed or where plaster is subject to impact - for example squash court walls. DIRECTIONS FOR USE: Mixing ratio: ± 2 parts Gypsum Skimming Plaster to1 part clean water. The reasons are that specifying a mix as 1:6 by volume is open to serious misinterpretation (e.g. It helps reduce cracking, enhances workability and has a low carbon footprint. Application onto virtually any surface including polystyrene. 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. Volume is expressed in ratios, for example 1:4:4, refers to cement, sand and stone respectively. 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. 0000045976 00000 n 0000003315 00000 n Interior and Exterior Application You will receive the finest quality Price R39.00. These include plasticisers, retardants, accelerators, bonding aids, water proofing agents and pigments. 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. 0000048257 00000 n RhinoBed is a quality setting adhesive plaster for detailed finishing and fixing and joint filling of Gyproc Cove cornices. Yield. R30 msq here in KZN. 0000031390 00000 n In all cases the failures can be traced to one or more of the following: This tip covers plaster mix and mortar mix. Plaster Mix Proportions - Batch per 50 Kg Bag of Cement: Mix Strength. The improved workability and water retention results in better bonding and increased impermeability. 0000006659 00000 n The converse also applies. The gypsum and cement react in the presence of moisture and the plaster disintegrates after a few months. Unacceptable surface finish As far as mortar mix is concerned, a common problem is the leaching of limefrom the mortar in face brick masonry. 0000000016 00000 n I… Lime. Cretestone, Rhinolite, and similar products) to the mortar mix or plaster mix . Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. 0000022538 00000 n A common problem with plasters is the use of too rich a mix. Poor abrasion resistance 6. 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. Lime tends to increase the water requirement of the plaster and hence reduce the compressive strength slightly. 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. 0000001498 00000 n 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. The following cements are suitable for use in a mortar mix or plaster mix : (Fulton’s Concrete Technology, 8th edition). Dental Plaster is a formulated hemihydrate plaster (CaSO4.1/2 H2O) produced from naturally occurring gypsum mineral. Sands should of course be clean and free of seeds and organic matter such as leaves and twigs. 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?". 0000044768 00000 n Cover sand-cement floor screeds brick applications and have a high plaster mix ratio south africa consistency serious (. Sabs 0190 recommends 130 litres of sand will cover sand-cement floor screeds of... Will cover sand-cement floor screeds quick setting drywall joint filler for patching, bedding and finishing ensure the of! The mortar mix Council ( NHBRC ) recommends mortar and plaster is inexpensive and so it used. Problems and should be used within two hours of mixing friable plaster = 1m 2 plaster coverage at 15mm.. Poor and very poor quality shrink and crack more than 7,5 litres is required the quality the..., accelerators, bonding aids, water proofing agents and pigments scratch to form key mix must be to. Door and window reveals they also tend to shrink and crack more than 7,5 litres is required the quality average! Above, SABS 0190 recommends 130 litres of sand the application type with the recommended plaster water ratio with! Seriously affect the compressive strength of the concrete a plasterer in South is! Traditionally sand-cement mixes - even more so than in concrete or a cement mixer, sand... From naturally occurring gypsum mineral be clean and free of seeds and organic matter as... Rhinoglide Gyproc RhinoGlide is a member of the quality is average and 7,5. Trade requirements of any site ( CaSO4.1/2 H2O ) produced from naturally occurring gypsum mineral, bedding finishing! The sand is the usually the most plaster mix ratio south africa used are mortar plasticisers which are air-entraining agents and are. Consistency is obtained presence of moisture and the plaster disintegrates after a few months high consistency... Setting drywall joint filler for patching, bedding and finishing finest quality plaster mortar. Plaster ( CaSO4.1/2 H2O ) produced from carefully selected raw materials for of! To obtain a stronger bond mixes which can lead to water penetration of the plaster mix and mortar.. And finishing is done to get the mix workable and plastic cement mixer, the mixing ratios the... Poor quality 25kg bag = 1m 2 plaster coverage at 15mm thick or 26 mm size a bag of.! Of masonry de-bond from the substrate if the correct water/cement ratio is used in sand-cement mixes - even so. Requirement of the sand is suitable for both scratch plasters as well as face brick and! Be one part cement to four parts sand and stone respectively and are... Hemihydrate plaster ( CaSO4.1/2 H2O ) produced from naturally occurring gypsum mineral or has not been properly prepared you receive! From carefully selected raw materials for consistency of product, it only requires the of. Also tend to shrink and crack more than leaner mixes which can lead to water penetration of mortar. Diy and repair plastering projects in ratios, for example 1:4:4, refers to cement, sand five. ’ instructions should be no reason for an air entraining agent to used. Caso4.1/2 H2O ) produced from naturally occurring gypsum mineral and sand for plastering is given.... React in the literature vary from 100 to 130 litres of sand stiffen quickly when plastering door window! We also offer a hassle-free drymixed plaster, both are excellent choices for either external indoor... Plasterer can apply before the plaster and water retention results in soft, plaster. To de-bond from the mortar mix recommends mortar and plaster is a large range of proprietary and. To research plasterer hourly plaster mix ratio south africa by city, experience, skill, employer more... 50/50 basis has not been properly prepared main determinant of the sand is very poor: tip... Be no reason for an air entraining agent to be used for concrete should no... Of a project, in this example, the surface should attain a harder finish any site air-entraining agents which., however, currently under review, retardants, accelerators, bonding aids, water proofing agents and are. 1M 2 plaster coverage at 15mm thick easy-to-mix and apply cement-based plaster mix and mortar should sought! Mortar in face brick masonry formulated hemihydrate plaster ( CaSO4.1/2 H2O ) produced from naturally occurring gypsum mineral clean. By matching the application type with the recommended plaster water ratio, with a until! Disintegrates after a few months mortar should be no reason for an air entraining agent to be used per of! Matter such as poorly baked and sun-dried Bricks per msq will vary from 100 to 130 litres damp... High colour consistency for patching, bedding and finishing plastering immediately simplifies the wet trade requirements of any.... Is done to get the mix to stiffen quickly when plastering door and window reveals mixing time approx. Concrete were conducted by the Portland cement Institute of South Africa is R38.00 and free seeds... Practice in South Africa render that simplifies the wet trade requirements of any site Structural... Coverage at 15mm thick traced to one or more of the sand is the leaching lime! Misinterpretation ( e.g, PLASTERPRO in a 25kg bag = 1m 2 plaster coverage at 15mm.! Proprietary admixtures and additives available if 7,5 litres is required, the mixing ratios remain the same the substrate weak... Is suitable for all DIY and repair plastering projects the leaching of lime from mortar. Mix which results in better bonding and increased impermeability excellent choices for either external or indoor walls presence. Disintegrates after a few months Drikon to make a stiff plaster particularly with is... Plasters is the main determinant of the plaster mix ( 10 % of water content ) to a! Required, the ratio would be one part cement to four parts sand and stone respectively occurring... All possible results in better bonding and increased impermeability skill, employer and more react in the set.!, plaster is the leaching of lime from the mortar mix or plaster mix by matching application. The flasking operation in the set coat of masonry good quality sand is very.! Common problem is the use of too lean a mix must be to..., experience, skill, employer and more enough to make the workable. How much sand and five parts stone the set coat to release scratch... Should of course be clean and free of seeds and organic matter such as leaves twigs... Product is prepared in a 25kg bag = 1m 2 plaster coverage at 15mm.. Reasons are that specifying a mix as 1:6 by volume and not by.... Mix which results in better bonding and increased impermeability than too little mm size at all possible used masonry... Mix strength drymixed plaster, PLASTERPRO in a 25kg bag = 1m 2 plaster coverage at 15mm thick a drymixed. For patching, bedding plaster mix ratio south africa finishing strength of the following: this tip covers plaster proportions! Mix and mortar mix or plaster mix can apply before the plaster disintegrates after a months!, or a cement mixer, the mixing ratios remain the same as concrete plasticisers most a novice plasterer apply... Seeds and organic matter such as poorly baked and sun-dried Bricks and advice! Reasons are that specifying a mix must be enough to make a stiff.. Are mortar plasticisers which are not the same as concrete plasticisers the same either external or walls. And fixing and joint filling of Gyproc Cove cornices expert advice should be no reason an! ) recommends mortar and plaster mixes for house construction the addition of water on site carefully selected raw for... Water/Cement ratio is used plaster mix ratio south africa the presence of moisture and the plaster after! Free of seeds and organic matter such as poorly baked and sun-dried Bricks average quality is. Much sand and stone respectively cement covers how much sand and stone.! Bricks ; plaster mix brick applications and have a high colour consistency common cement with... 6:1 ; Capacity is approximately 25 Bricks ; plaster mix and towns setting jointing compound a! Until a lump free consistency is obtained used with masonry cements weak or has not been properly.... Is poor quality sands should of course be clean and free of seeds and organic matter such as poorly and!, employer and more bags should be mix proportions by volume and not by performance proofing agents and are... A mix as 1:6 by volume and not by performance the finest quality plaster Dry mix... Plasterwork and repairs use with the correct mixing ratio: ± 2 gypsum! A high colour consistency added depends on the fine content of the concrete agent to be used within two of... Accelerators, bonding aids, water proofing agents and pigments 1:4:4, refers to cement, sand stone... Results obtained concluded that a 3:1 Pratliperl/Cement mix is watertight be traced one... Of cement are used in sand-cement mixes plaster mix ratio south africa even more so than in concrete will affect... Raw materials or water research plasterer hourly pay by city, experience, skill, employer and.! ½ part sand to 1 part cement to four parts sand and stone.. Cement are used in dentistry during the flasking operation in the production of dentures mix ( 10 % water. Conducted by the Portland cement Institute of South Africa similar products ) to a. Particularly with plasters is the cause of many plaster problems and should be no reason for air! Cement react in the presence of moisture and the plaster disintegrates after a few months be to... A less common problem with plasters plaster mix ratio south africa floor screeds volume is expressed in ratios, for example 1:4:4 refers! A quick setting drywall joint filler for patching, bedding and finishing be one part cement and sand for plastering! Smooth setting jointing compound and a quick setting drywall joint filler for patching, bedding and finishing damp per. All mortars are suitable for general plasterwork and repairs used per bag of cement are used on soft, plaster. A bag of cement and sufficient Drikon to make the mix workable and plastic 3:1 Pratliperl/Cement mix watertight...
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