Gypsum putty is mainly used to grout together with gypsum powder and water and glue. The putty used for caulking is very common in decoration. Let's talk about the construction method and precautions of gypsum putty:
Putting putty engineering construction technology standard
1 Scope of application
This standard applies to construction engineering concrete and plastering surface, gypsum board joints, wood surface, metal surface and other base layer putty.
2 Reference standard
Construction Decoration Code for Residential Decoration Project (GB50327-2001)
Quality Acceptance Specification for Building Decoration Engineering (GB50210-2001)
Putty for building interior (JGJ/T3049)
3 terms
Polyvinyl acetate putty - mixed with polyvinyl acetate emulsion (white latex) plus filler (talc or white powder) carboxymethyl cellulose solution. Used for scraping putty on concrete surfaces and plaster surfaces.
Polyvinyl acetate cement putty - mixed with polyvinyl acetate emulsion, cement and water. Used for plastering putty on the exterior wall plastering surface.
Gypsum putty - mix the cooked tung oil and gypsum powder and add water to mix and mix. Wall scraping putty for wood surface and brushed oil.
Gypsum clay putty - gypsum powder: SG791 glue = 1: 0.6 ~ 0.7 (weight ratio), used to repair gypsum board joints.
Water-powder putty - mix with bone glue and white powder and add appropriate amount of pigment and water to mix evenly. Water-repellent powder with varnish on wood surface.
Oil powder putty - cooked tung oil mixed with pine perfume, and then added with white powder blended. Oil powder for wood surface varnish.
Metallic plaster putty - formulated with gypsum powder, cooked tung oil, oily putty or alkyd putty, primer, water, used for metal surface repair putty.
Water-resistant putty - the market has a finished product supply for indoor putty with waterproof requirements.
4 Material requirements
The fillers, adhesives, paints, coatings and other materials used for blending putty must be certified by the State and Beijing Municipality. The materials used must have a product certificate. It is strictly forbidden to use materials that have been eliminated by the state.
5 Construction preparation
5.1 Working conditions
5.1.1 The plastering operation has been completed.
5.1.2 The equipment of the wall surface is finished, the wall is dry, and all kinds of holes through the wall are plastered.
5.1.3 The moisture content of the base wall of concrete wall shall not exceed 8%.
5.1.4 The surface moisture content of the wood base layer is not more than 12%.
5.1.5 The ambient temperature is not easily lower than +10 °C, and the relative humidity is not more than 60%.
5.2 Main equipment
Size pulp bucket, brush, row pen, open knife, rubber scraper, 0# and 1# sandpaper, 50-80 mesh steel wire, size bucket, rubber tube and other sporadic accessories, putty board, horn board, clean wipes, etc.
6 operating process
6.1 Concrete and plaster surface paint base layer scraping putty
6.1.1 Material preparation: gypsum powder, white, carboxymethyl cellulose, polyvinyl acetate emulsion, water-resistant putty, interface agent, etc.
6.1.2 For the treatment of the base layer, firstly, the wall surface is not chamfered, the unevenness is more severe, and the water is sprayed with water. The cement slurry mixed with the interface agent is then smeared with 1:3 cement mortar, and the thickness of each repair must not exceed 9mm, the cement mortar can be finally condensed before the next process. Note that the repair mortar must be firmly bonded to the substrate without defects such as peeling, hollowing and cracking.
6.1.3 Mixing putty mix ratio (weight ratio)
Indoor is polyvinyl acetate emulsion: large white powder: 2% carboxymethyl cellulose solution = 1:5:3.5; outdoor is polyvinyl acetate emulsion: cement: water = 1:5:1; indoor kitchen with waterproof requirements, toilet Apply water-resistant putty to other parts.
6.1.4 Base layer repair putty, use putty to wall, door window and other bumps and damages, honeycomb, pockmark, wind crack, joint gap to find the repair, dry and sandpaper flat.
6.1.5 The wall is full of putty, the number of wall putty putty is determined by the engineering quality requirements standard and the flatness of the base layer, generally three times. The first time, the rubber scraper is scraped horizontally, and the scraper is next to a scraper. The joint should not be left in the joint. The scraper should be clean and clean when it is finished. After drying, it should be sanded with No. 1 sandpaper. Putty and stains are polished and polished, and the wall is cleaned. In the second pass, the rubber scraper is vertically scraped. The method is the same as the first putty. After drying, it is smoothed with No. 1 sandpaper and cleaned. The third time, the rubber scraper is used to find the putty, and the steel scraper is used to scrape the putty, and the base layer is smoothed and scraped. After drying, smooth and smooth with No. 0 sandpaper, the surface is smooth and smooth, and the line angle is straight. Pay attention to sanding the sandpaper or wear the putty.
6.1.6 After the putty is scraped, after the inspection meets the requirements, the next process shall be carried out.
Precautions for plaster putty construction:
1. The construction temperature is greater than 5 °C.
2. If the humidity is too high in rainy days, the construction should be suspended.
Gypsum putty has the property of rapid solidification, and its use can also save latex paint, which is very common in home wall decoration. Gypsum putty construction methods and precautions are introduced here, I hope to help everyone.
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