A base coat of 15-20mm thickness should be applied and cure it for two days. Curing should be started as soon as the plaster has hardened sufficiently and must be cured for at least 7 days. Improper curing may lead to cracks formation or efflorescence in plaster work. 9th July 2020 by Krunal Rajput 2 Comments. The most common application method for easy-care and durable press finishes is a pad–dry–cure procedure. Lime plaster is applied in these coats or in three coats or in two cots. HSE. 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. The thickness of the final coat may vary from 2 to 3 mm. During this period, the surface is curved and then allowed to dry completely. How do I calculate volume of 50 Kg cement bag? The surface is cleaned, and water is sprinkled property on it. Water curing is an absolute must during this period. curing is big task. With masons trowel and pressed well into joints and over the surface. 5) Miscellaneous curing. The mortar is dashed with mason’s trowel, spread, and rubbed to the required plain surface with a wooden float. Plaster can be cellulose, cement based, mud-based, stucco plaster, lime based or acrylic. Maximum width of 20mm horizontal grooves between walls and beams will be formed bycutting using grinders with diamond wheels after plastering the wall surface. Get Traffic & Exposure. Thin partition walls and ceilings are plastered using laths. 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. The thickness of the coat should be such as to cover all inequalities of the surface normally this thickness is 12mm. This is used only in interior quality work. To get uniform 150 x 150 mm and 10 mm thick dots are prepared on the surface at a lower level. The mortar is applied forcibly on the surface of wall. Difference Between Plinth Level, Sill Level, and Lintel Level. If wet curing is not possible, then curing compound can be used to cure the concrete surface. All dirt and dust are cleared. 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. 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. 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. In this, any dots are applied on all the surface of the wall at 1500 to 2000 mm. 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. Curing of stucco achieves two things: long-term strength development and improved substrate conditions for application of exterior finishes. Share it with your friends! W.D. We help brands optimize their online presence & performance. 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. Curing In Construction | Concrete Cure Time | Methods of curing, What Is Plaster | Type of Plaster | Defects In Plastering, Difference Between Bitumen and Tar | What Is Bitumen | What Is Tar, Difference Between CPM and PERT | What Is CPM & PERT, Difference Between One Way Slab and Two Way Slab | What is Slab, Introduction of USCS | USCS Classifies Soils into Two Broad Categories, Introduction of Gantry Girder | Load on Gantry Gutter | Type of Load on Gantry Gutter, What Is Pier Foundation | Types of Drilled Piers | Advantages and Disadvantages of Drilled Pier Foundations, 23 Different Types Cements Available in India and As Per IS Standards, 10 Best Steel Brand for House Construction in India, How to Use Rate Analysis of Brick Work Calculator| Rate Analysis of Brick Work Calculator, Different Between Clamp Burning and Kiln Burning | What Is Clamp Burning | What IS Kiln Burning. A rough texture has to be obtained to provide a mechanical key for the next coat. First coat also known as rough coat is applied on the surface in a layer of 6 to 10 mm in thickness. PLASTERING 7. 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. The first coat is prepared properly to apply the second coat, i.e., a floating coat. Use of gunny bags or other materials is used to keep the plastering works wet in external works. 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. Cement paste on concrete surfaces will be applied to improve the bonding of plaster to theconcrete surfaces. Curing does not mean only application of water; it means also creation of conditions for promotion of uninterrupted and progressive hydration. 1) Water Curing of Concrete: Also, read: Curing In Construction | Concrete Cure Time | Methods of curing. Read More: ESTIMATION OF A BUILDING WITH PLAN. The joints are ranked at a depth of 20 mm. Methods Used For Curing of Concrete There are various methods of curing. Modern plasters can contain portland cement or gypsum products. 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. Before the first coat is applied preliminary coat is applied to make an uneven surface in le. It is intended for architects, building contractors, building inspectors, and anyone in need of guidance to achieve a satisfactory standard of work. Building Materials. CURING METHODS AND MATERIALS Concrete can be kept moist (and in some cases at a favor-able temperature) by three curing methods: 1. 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. Wooden Laths; Metal Laths The floating coat is applied, and after seven days finished coat is applied, after 6 hours of applying a floating coat. Some plaster finishes can be used both indoors and outdoors, as is the case with lime-based plaster. 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 The present invention relates to a method of plastering the surface of the concrete by mixing the adhesive resin and the color silica. 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. The following methods of curing of concrete are generally adopted. The plain expanded metal lath(exam) is commonly metal laths are fixed to the surface by G.I Staples. Laths may be. Your email address will not be published. A. 7. 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. Materials are subjected to GIJV’s approval & applied in site as per manufacturer recommendation. The final coat is applied with wooden floats to a true even surface with steel trowels. 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. This method statement will mainly focus on the cement plastering application. First, … Cure the plaster/render with clean potable water for a period of 3 days with 4-5 times a day. 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. The third coat is called a finishing coat. I am a Degree Holder in Civil Engineering. I started this site to spread knowledge about Civil Engineering. Metal laths are available under various patent names. A local plasterer will not pay heed to you and your place safety. Professional plasterers look after the cleaning of the mess and do not spoil the objects around the place. 5.5 Application methods. 28 Mar 2018 29 May 2018. Shading concrete work Covering concrete surfaces with hessian or gunny bags Sprinkling of water Ponding method […] 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. Gypsum plastering is also a faster application method for internal surfaces, since it does not require time consuming water curing process. 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. Curing of concrete pavements, run ways, bridge decks etc. 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. It can be an efficient method for curing by supplying additional moisture during hot weather. 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. Wooden laths are well seasonal wooden strips 25 mm wide and 1 to 1.2 m long. can be cured to reach their maximum strength. The thickness first coat is kept 2 to 3 mm less than a total thickness of plaster. Your email address will not be published. In plastering usually 3 numbers of coats are applied. Before applying the final/coat, the rendering coat is damped well. 10 cm wide strips or 15 cm x 15 cm patches are applied at a suitable distance. Then the spaces between screeds are filled with mortar and properly finished. 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. Cement paste on concrete surfaces will be applied to improve the bonding of plaster to the concrete surfaces. I started this site to spread knowledge about Civil/Mechanical/Electrical Engineering. The background is prepared before applying plaster. This coat is allowed to harden slightly a then scratch marks are made on the surface with the help of trowel ledge. All mortar droppings and dust and laitance (in case of freshly laid concrete) should be removed with the help of stiff wire brush. Tag: methods of plastering application and curing. I am a Degree Holder in Civil Engineering. 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. 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). (1) Water curing (2) Membrane curing (3) Application of heat . The Man Behind CivilJungle. 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 … Exterior plasters, often called stucco, normally contain portland cement because of its low solubility in water. The adoption of a particular method will depend upon the nature of work and the climatic conditions. The Man Behind CivilJungle. The following are the Curing of Concrete methods. You can find him on Facebook, Twitter, Tumblr, Instagram and Google News. This groove willbe filled with approved weather sealant. Then it is allowed to dry completely. Methods that maintain the presence of mixing water in the concrete during the early hardening period. Also, read: Difference Between Bitumen and Tar | What Is Bitumen | What Is Tar. For interior work single coat plaster is applied. Required fields are marked *. The method allows keeping the walls wet throughout the curing period. Lime-based plaster is mould resistant and is not prone to crumbling or cracking. In plastering dangerous types of equipment are used. Hey, I am Krunal Rajput. Curing shall commence, 24 hours after the plaster is laid. Hey, I am Krunal Rajput. Then curing is done after one day for seven days. Form ties and other obstruction shall be removed or trimmed back even with the surface of the solid base. information needed for successful plastering. Method of Application: The curing compounds may be applied by brush or spraying while the concrete is wet. But with the presence of curing compound it is easier. This is the process of covering rough surfaces with a plastic material to obtain an even, smooth, regular, clean & durable surfaces. The purpose of this coat is to bring the plaster to an even surface. The first coat is racked as a rendering coat. 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. Then, the first coat is applied. Plastering is one of the final steps in finishing an interior or exterior wall. For good quality works, either two coat or three coat plaster is applied. In the case of concrete or masonry surfaces, wooden plugs have to be embedded for fixing the lath. These methods The floating coat is beaten with floats edge at the close spacing of cm. Hauser, in Chemical Finishing of Textiles, 2004. These include ponding or immersion, spraying or fogging, and saturated wet coverings. First coat mortar filling (1:4 Cement and Sand) up to 15 mm will be applied on surfaces where required mortar thickness exceed 25mm. 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. 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. If plastering is required to be done earlier, the surface of the concrete should be washed off with hot water before plastering. Four dots are covered masonry with the help or screed, and plaster is applied properly. Also, read: What Is Plaster | Type of Plaster | Defects In Plastering. By using nozzles or sprayers, water is sprayed on the concrete members, which are to be cured. A minimum 48 hours have to elapse prior to the application of the second coat. 4) Electrical curing . The application of liquid membrane-forming curing compounds is the most widely used method for curing concrete. 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. It is very important to ensure that there should not be any chance of the plaster getting debonded due … 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. These patches or strips act as a gauge for thickness or floating coat. At CivilJungle, we clarify civil engineering and publish all the happenings & news of civil engineering. In the US, the there are two main types of plaster, and they have different properties. The rendering coat is applied, and scratches are made. 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. Like this post? Laths are fixed in a parallel line with a clear spacing of 10 mm and secured to the surface with galvanized iron nails. Plastering Defination of plastering : The word “plaster” comes from the Greek language meaning “to daub on”. For larger areas of concrete surfaces which are opened to sunlight, wind etc. Curing by spraying of water or fogging is one of the conventional methods of curing concrete in the construction industry. After fixing the lath, the surface is plastered, usually, in there coats, cement mortar is used. 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. Plastering. Interior plasters usually contain gypsum. The rubbing is done till the finishing coat is quite dry. But two coat plaster is more common sow shall discuss it first. Methods of Plastering. Enter your email address to follow this blog and receive notifications of new posts by email. The thickness or floating coat is  6 to 9 mm. Wooden laths are used and ceilings. Plaster is formed through the mixture of dry materials either by the use of these components of sand, gypsum, lime or cement together with water to form a stiff but workable paste before it is immediately applied to the surface. Early plaster systems could contain lime, gypsum, marble dust, fibers and sand in up to three coats. Plater is applied in the manner mention below. Aspects dealt with include selection of materials, mix pro-portions, surface preparation and correct plaster application. Plastering methods were refined by the Greeks and Romans. 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. Laths are provided as a foundation to receive plasterwork. Schindler, P.J. It is wetted properly. Water curing process is mandatory for 20 – 21 days after sand-cement plastering to reduce shrinkage cracks arising due to heat of hydration. Which are the Safety Precautions Taken During the Plastering Work? 09. 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. Three Coat Plaster. Contain lime, gypsum, marble dust, fibers and sand in to... Fixed in a layer of 6 to 10 mm and 10 mm and secured to surface! 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