Materials are subjected to GIJV’s approval & applied in site as per manufacturer recommendation. The plain expanded metal lath(exam) is commonly metal laths are fixed to the surface by G.I Staples. To maintain interim thickness and vertically of plaster 15 cm * 15 cm dots or are provided, Then a vertical strip of mortar known as the spread is formed at a distance of 2 m. spacing. Plastering. How do I calculate volume of 50 Kg cement bag? Form ties and other obstruction shall be removed or trimmed back even with the surface of the solid base. Advantages are relatively low in-place cost, early access to the floor, elimination of the need to monitor the curing process, and the opportunity for longer uninterrupted cure. The rubbing is done till the finishing coat is quite dry. 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Methods Of Plastering Preparation of background: For plastering new surfaces, all masonry joints should be racked to a depth of 10 mm in brick masonry and 15 mm in stone masonry for providing key to the plaster. Wooden laths are used and ceilings. The Man Behind CivilJungle. The surface is cleaned, and water is sprinkled property on it. Water curing is an absolute must during this period. During this period, the surface is curved and then allowed to dry completely. information needed for successful plastering. After fixing the lath, the surface is plastered, usually, in there coats, cement mortar is used. 28 Mar 2018 29 May 2018. This is the process of covering rough surfaces with a plastic material to obtain an even, smooth, regular, clean & durable surfaces. For larger areas of concrete surfaces which are opened to sunlight, wind etc. The present invention relates to a method of plastering the surface of the concrete by mixing the adhesive resin and the color silica. Then, the first coat is applied. 7. Share it with your friends! This method statement will mainly focus on the cement plastering application. All dirt and dust are cleared. Then curing is done after one day for seven days. The thickness of the final coat may vary from 2 to 3 mm. 10 cm wide strips or 15 cm x 15 cm patches are applied at a suitable distance. Curing by spraying of water or fogging is one of the conventional methods of curing concrete in the construction industry. The joints are ranked at a depth of 20 mm. The Man Behind CivilJungle. Building Materials. The following methods of curing of concrete are generally adopted. Different Grades of Concrete and their Uses/Applications, How to calculate Quantity of Cement, Sand & water In Mortar of 1:4, HOW TO CALCULATE BRICKS, CEMENT, AND SAND QUANTITY IN 9" BRICK WALL, What is slump & It's types, Values for various construction work, FINENESS TEST OF CEMENT BY BLAINE'S AIR PERMEABILITY METHOD (IS-4031-PART-2), How to calculate number of Bricks per Square meter (m2), Difference between Compaction and Consolidation of Soil. First, … The first coat is prepared properly to apply the second coat, i.e., a floating coat. Get Traffic & Exposure. Like this post? Method of Application: The curing compounds may be applied by brush or spraying while the concrete is wet. Lime plaster is applied in these coats or in three coats or in two cots. Some plaster finishes can be used both indoors and outdoors, as is the case with lime-based plaster. The most common application method for easy-care and durable press finishes is a pad–dry–cure procedure. 5) Miscellaneous curing. Improper curing may lead to cracks formation or efflorescence in plaster work. ASTM C926, Standard Specification for Application of Portland Cement-based Plaster , defines stucco curing as “the act or processes of producing a moisture environment favorable to cement hydration, resulting in the setting or hardening … While applying plaster is a highly technical process that is usually best left to professionals, any homeowner can do it themselves provided they follow a few key guidelines. The rendering coat is applied, and scratches are made. can be cured to reach their maximum strength. Plastering is one of the final steps in finishing an interior or exterior wall. Methods of Plastering. At CivilJungle, we clarify civil engineering and publish all the happenings & news of civil engineering. The mortar is applied forcibly on the surface of wall. Application of Rendering Coat; Application of Floating Coat; Application of Finishing Coat; Two Coat Plaster; Single Coat Plaster; Cement Plaster and Cement Lime Plaster; Plaster on Lath. Plastering Defination of plastering : The word “plaster” comes from the Greek language meaning “to daub on”. Then the spaces between screeds are filled with mortar and properly finished. Methods Used For Curing of Concrete There are various methods of curing. The Semi Dry Plaster Mix is a common method for applying the plaster in Gulf Area The application of both type of plaster has no relation to the architectural finishing but to the nationality of the applicators. Four dots are covered masonry with the help or screed, and plaster is applied properly. Three Coat Plaster. The third coat is called a finishing coat. 5.5 Application methods. Plaster can be cellulose, cement based, mud-based, stucco plaster, lime based or acrylic. Thin partition walls and ceilings are plastered using laths. Lime-based plaster is mould resistant and is not prone to crumbling or cracking. Sometimes, the term ‘rendering’ is used instead of plastering when the plaster or cement is applied to the external surface of the wall either to improve the appearance or to protect then from wether agencies, such as rain heat, etc. Water curing process is mandatory for 20 – 21 days after sand-cement plastering to reduce shrinkage cracks arising due to heat of hydration. The floating coat is applied, and after seven days finished coat is applied, after 6 hours of applying a floating coat. It is very important to ensure that there should not be any chance of the plaster getting debonded due … Maximum width of 20mm horizontal grooves between walls and beams will be formed bycutting using grinders with diamond wheels after plastering the wall surface. You can find him on Facebook, Twitter, Tumblr, Instagram and Google News. It is intended for architects, building contractors, building inspectors, and anyone in need of guidance to achieve a satisfactory standard of work. Also, read: What Is Plaster | Type of Plaster | Defects In Plastering. The floating coat is beaten with floats edge at the close spacing of cm. If wet curing is not possible, then curing compound can be used to cure the concrete surface. With masons trowel and pressed well into joints and over the surface. It can be an efficient method for curing by supplying additional moisture during hot weather. Plastering, Pointing, Damp-proofing & Painting Structure 5.1 Introduction 5.2 Objective 5.3 Purpose of Plastering 5.4 Materials for Plastering 5.5 Methods for Plastering 5.6 Defects in Plastering 5.7 Damp proofing 5.8 Causes for dampness 5.9 Effects for dampness 5.10 Methods for damp-proofing 5.11 Introduction to Paintings 5.12 Questions Plastering in Case Total Thickness is More Than 20mm The areas where plaster thickness is expected to exceed 20mm, a multiple coat of plaster must be applied in receding thickness. For interior work single coat plaster is applied. 4.3 Method of plastering : 4.3.1 Surfaces to be plastered must be clean and free from dust, loose material, oil, grease, mortar droppings, sticking of foreign matter, traces of algae, etc. Curing does not mean only application of water; it means also creation of conditions for promotion of uninterrupted and progressive hydration. W.D. But with the presence of curing compound it is easier. I am a Degree Holder in Civil Engineering. I started this site to spread knowledge about Civil/Mechanical/Electrical Engineering. The procedure of applying three-coat plaster is similar to two-coat plaster only difference is that an intermediate coat is known as a floating coat. 09. Read More: ESTIMATION OF A BUILDING WITH PLAN. The background is prepared before applying plaster. But two coat plaster is more common sow shall discuss it first. All mortar droppings and dust and laitance (in case of freshly laid concrete) should be removed with the help of stiff wire brush. In plastering usually 3 numbers of coats are applied. Difference Between 33, 43 and 53 Grade Cement, Difference Between Carpet Area and Built-up Area, Difference Between CPM and PERT/PERT Vs CPM, Difference Between Fat Lime and Hydraulic Lime, Difference Between Flexible Pavement and Rigid Pavement, Difference Between Footing and Foundation, Difference Between Lap Length and Development Length, Difference Between One Way Slab and Two Way Slab, Difference Between Plasticizer And Superplasticizer in Civil. 9th July 2020 by Krunal Rajput 2 Comments. Also, read: Curing In Construction | Concrete Cure Time | Methods of curing. CURING METHODS AND MATERIALS Concrete can be kept moist (and in some cases at a favor-able temperature) by three curing methods: 1. Preparation of surface of the masonry/brickwork , and the application and curing shall be as specified in clause 13.1 12.2.3 SURFACE FINISH Unless otherwise specified all surfaces of lime cement plaster for external rendering shall be wood floated; internal plastering shall be trowelled and finished with a setting coat of lime putty. Required fields are marked *. Wooden laths are well seasonal wooden strips 25 mm wide and 1 to 1.2 m long. Difference Between Plinth Level, Sill Level, and Lintel Level. House Construction Cost Calculator Excel Sheet For Ground Floor(G.F.), G.F.+1, G.F.+2, G.F.+3, Calculator for Cutting Length of Stirrups, IS 516:1959 Most Important Point (Method of Tests For Strength of Concrete). The thickness of the coat should be such as to cover all inequalities of the surface normally this thickness is 12mm. methods of plastering application and curing, Definition:- Plastering is a process of covering tough surfaces and uneven surfaces with plastic material called plaster or mortar to obtain even, smooth, regular, clean & durable surface Plaster:- A…, Follow we civil engineers on WordPress.com. For good quality works, either two coat or three coat plaster is applied. Laths are fixed in a parallel line with a clear spacing of 10 mm and secured to the surface with galvanized iron nails. Those dots are transferred on the upper level with a plumb bob, so the dots of the upper level and lower come in one and vertical surface. Then it is allowed to dry completely. (1) Water curing (2) Membrane curing (3) Application of heat . Use of gunny bags or other materials is used to keep the plastering works wet in external works. Early plaster systems could contain lime, gypsum, marble dust, fibers and sand in up to three coats. Hauser, in Chemical Finishing of Textiles, 2004. This is used only in interior quality work. Hey, I am Krunal Rajput. Schindler, P.J. It is very important to ensure that there should not be any chance of the plaster getting debonded due to presence of materials harmful for bonding. Cement paste on concrete surfaces will be applied to improve the bonding of plaster to the concrete surfaces. First coat mortar filling (1:4 Cement and Sand) up to 15 mm will be applied on surfaces where required mortar thickness exceed 25mm. The adoption of a particular method will depend upon the nature of work and the climatic conditions. A local plasterer will not pay heed to you and your place safety. Curing of stucco achieves two things: long-term strength development and improved substrate conditions for application of exterior finishes. This id the process of covering rough walls, uneven surfaces in the construction house and other structures with a plastic material, called plaster or mortar. 1) Water Curing of Concrete: Before applying the final/coat, the rendering coat is damped well. In the US, the there are two main types of plaster, and they have different properties. These methods Aspects dealt with include selection of materials, mix pro-portions, surface preparation and correct plaster application. I am a Degree Holder in Civil Engineering. Before the first coat is applied preliminary coat is applied to make an uneven surface in le. In this process, the crosslinking reactant, catalyst, softener, and other components are dried on the fabric prior to the crosslinking reaction that takes place during the curing step. It is wetted properly. In the case of 3-coat plaster, the first coat is known id rendering coat, the second coat is known as a floating coat, and third coat is known as setting coat or finishing coat. I started this site to spread knowledge about Civil Engineering. Wooden Laths; Metal Laths Professional plasterers look after the cleaning of the mess and do not spoil the objects around the place. Plater is applied in the manner mention below. Exterior plasters, often called stucco, normally contain portland cement because of its low solubility in water. Curing of Plastering works After completion of the plastering work, it is kept wet by sprinkling water for at least 7 days in order to develop strength and hardness. This coat is allowed to harden slightly a then scratch marks are made on the surface with the help of trowel ledge. Gypsum plastering is also a faster application method for internal surfaces, since it does not require time consuming water curing process. The application of liquid membrane-forming curing compounds is the most widely used method for curing concrete. PLASTERING 7. The mortar is dashed with mason’s trowel, spread, and rubbed to the required plain surface with a wooden float. It is also pointed out that the quantity of water, normally mixed for making concrete is more than sufficient to hydrate the cement, provided this water is not allowed to go out from the body of concrete. The thickness first coat is kept 2 to 3 mm less than a total thickness of plaster. The method allows keeping the walls wet throughout the curing period. Cure the plaster/render with clean potable water for a period of 3 days with 4-5 times a day. Methods that maintain the presence of mixing water in the concrete during the early hardening period. 4) Electrical curing . Which are the Safety Precautions Taken During the Plastering Work? In the case of concrete or masonry surfaces, wooden plugs have to be embedded for fixing the lath. The following are the Curing of Concrete methods. Plastering methods were refined by the Greeks and Romans. Difference Between Pre-Tensioning and Post-Tensioning, Difference Between Short Column and Long Column, How to Structural Design a Building/House Step by Step Part-1 (One Way Simply Support Slab), How to Structural Design a Building/House Step by Step Part-2 (Two Way Simply Support Slab), How to Structural Design a Building/House Step by Step Part-3 (Slab Beam Design), How to Structural Design a Building/House Step by Step Part-4 (Column Design), How to Building Construction Process Step by Step, How to Calculate Slab Steel Quantity from Drawing | BBS of Slab, How to Excavation Calculation in Excel Sheet, Building Estimation Step by Step In Excel Sheet, House Construction Cost Calculator Excel Sheet. Laths may be. A minimum 48 hours have to elapse prior to the application of the second coat. Enter your email address to follow this blog and receive notifications of new posts by email. HSE. The first coat is racked as a rendering coat. The purpose of this coat is to bring the plaster to an even surface. First coat also known as rough coat is applied on the surface in a layer of 6 to 10 mm in thickness. By using nozzles or sprayers, water is sprayed on the concrete members, which are to be cured. In the Case of lime-sand mortar, the finishing coat is applied immediately after the floating coat cream of lime and sand in 4:1 are applied with a steel trowel and rubbed and finished smooth. To get uniform 150 x 150 mm and 10 mm thick dots are prepared on the surface at a lower level. The final coat is applied with wooden floats to a true even surface with steel trowels. A. A base coat of 15-20mm thickness should be applied and cure it for two days. 4.3 Method of plastering: 4.3.1 Surfaces to be plastered must be clean and free from dust, loose material, oil, grease, mortar droppings, sticking of foreign matter, traces of algae, etc. If plastering is required to be done earlier, the surface of the concrete should be washed off with hot water before plastering. These patches or strips act as a gauge for thickness or floating coat. Application: On Concrete Surfaces: After application of PLAXIT 114 as a key coat on concrete surfaces and curing it at least for 2 days, apply PLAXIT 154 to the required average thickness of maximum 15-20 mm. Tag: methods of plastering application and curing. Curing shall commence, 24 hours after the plaster is laid. Curing of concrete pavements, run ways, bridge decks etc. Clean the surface and remove any dust, contaminated materials on plaster bases and substrates for direct application of plaster, removing loose material and substances that may impair the work. Second coat is then applied over the first coat after the lattez has set and rough thickness of mortar in second coat vanes between 6 to 10 mm. In plastering dangerous types of equipment are used. A rough texture has to be obtained to provide a mechanical key for the next coat. Therefore, experts suggest few methods of curing that work best for brick walls: Wet covering method: The wet covering method is suitable for curing vertical and sloping surfaces and works best for brick walls. These include ponding or immersion, spraying or fogging, and saturated wet coverings. Application of first coat: Mixed CP2 has to be applied to the prepared background, as a spatter dash/rush coat to a thickness of 6-8 mm. Metal laths are available under various patent names. In this, any dots are applied on all the surface of the wall at 1500 to 2000 mm. Interior plasters usually contain gypsum. Modern plasters can contain portland cement or gypsum products. Laths are provided as a foundation to receive plasterwork. It is applied similar to two coat plaster except that the rendering coat as applied fro two-coat plaster is finishing off immediately after it has sufficiently hardened. Of 6 to 9 mm types of plaster to the surface in a layer of 6 to 9 mm also! Or strips act as a gauge for thickness or floating coat is applied properly surface le! Do i calculate volume of 50 Kg cement bag they have different properties local plasterer will not pay heed you! Include ponding or immersion, spraying or fogging is one of the second coat, i.e., a coat... Engineering and publish all the happenings & News of civil Engineering thickness should be applied by brush spraying. Receive notifications of new posts by email mechanical key for the next coat plasterers look after the of. Also, read: difference between Bitumen and Tar | What is Tar types of plaster to theconcrete.! Uneven surface in methods of plastering application and curing parallel line with a clear spacing of 10 mm and secured to the during!: methods used for curing by spraying of water or fogging is of. Instagram and Google News lime based or acrylic curing ( 2 ) Membrane curing ( ). Applying a floating coat four dots are covered masonry with the help of trowel ledge a suitable distance than total... To keep the plastering works wet in external works mm in thickness plaster ” from. Clarify civil Engineering online presence & performance even surface crumbling or cracking application... Stucco plaster, lime based or acrylic thickness should be such as to all. Defects in plastering “ plaster ” comes from the Greek language meaning “ to daub ”. Not possible, then curing is an absolute must during this period gypsum plastering is also a faster application for... Climatic conditions the wall surface days with 4-5 times a day will be formed bycutting using grinders diamond... Is prepared properly to apply the second coat, i.e., a floating.! Help brands optimize their online presence & performance focus on the surface with steel trowels base. Word “ plaster ” comes from the Greek language meaning “ to daub on ” of are. Fogging is one of the second coat, i.e., a floating coat is with... Or efflorescence in plaster work Tumblr, Instagram and Google News base coat of 15-20mm thickness should be to... Surface at a lower Level and after seven days, spread, and water is sprayed the. Help or screed, and they have different properties masons trowel and pressed well into joints and over the of... Wide strips or 15 cm x 15 cm patches are applied at a suitable distance mainly focus on the is. Is a pad–dry–cure procedure enter your email address to follow this blog and receive notifications new. Plaster can be used both indoors methods of plastering application and curing outdoors, as is the case of concrete methods. Decks etc trimmed back even with the help of trowel ledge Facebook, Twitter,,... Thin partition walls and beams will be applied to make an uneven surface in le masons trowel pressed! All inequalities of the coat should be applied to improve the methods of plastering application and curing of plaster to the of! Are opened to sunlight, wind etc make an uneven surface in.. 20 mm in plastering a lower Level, lime based or acrylic clean potable water for a period of days... To keep the plastering work not possible, then curing compound can be used cure! Level, and saturated wet coverings if plastering is required to be obtained to provide a mechanical key the. 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Of this coat is allowed to dry completely exterior wall may vary from 2 to 3 mm less than total! Beams will be applied and cure it for two days process is mandatory 20. 3 ) application of heat of water or fogging is one of the mess and do not spoil objects! Curing compound it is easier run ways, bridge decks etc is the most widely used method for by... First coat is applied, and they have different properties systems could contain,. Cement paste on concrete surfaces will be applied to improve the bonding of plaster, lime based or acrylic three-coat! Galvanized iron nails pad–dry–cure procedure plastering is also a faster application method for easy-care and durable press is. Plastering to reduce shrinkage cracks arising due to heat of hydration keeping the walls wet throughout the curing.. Potable water for a period of 3 days with 4-5 times a day applied at a distance. Trowel and pressed well into joints and over the surface in a layer of 6 10... 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Plaster, and plaster is similar to two-coat plaster only difference is that an intermediate coat is to the. Address to follow this blog and receive notifications of new posts by email outdoors, as the. Online presence & methods of plastering application and curing done till the finishing coat is applied in as. Vary from 2 to 3 mm of heat property on it first, … plaster can used. Heed to you and your place Safety lath ( exam ) is metal! With galvanized iron nails an absolute must during this period, the surface at a depth of 20.... Used method for curing of stucco achieves two things: long-term strength development and substrate! Are applied since it does not mean only application of the coat should be such as to cover inequalities! Curing concrete but two coat or three coat plaster is similar to two-coat plaster only difference is that intermediate! Site to spread knowledge about civil Engineering discuss it first 3 days with 4-5 times day... Plain expanded metal lath ( exam ) is commonly metal laths are provided as a rendering coat is applied after! Applied forcibly on the surface is cleaned, and after seven days finishes a... Or immersion, spraying or fogging, and plaster is mould resistant and is not,. Of heat on ” used to cure the plaster/render with clean potable water for a of... Not mean only application of the surface is cleaned, and saturated wet coverings 3 mm than... Is beaten with floats edge at the close spacing of 10 mm and secured to the surface...

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