Construction according to different base layers:
The process of concrete wall scraping putty is: base layer treatment - base layer repair - brushing alkali solution - coating binder (grape slurry) - scraping white putty - repairing and polishing - putty to survive.
The process of concrete floor and floor screed putty is: base treatment - base repair - brushing alkali solution - coating binder (slurry, spray glue) - scraping white putty - repairing and polishing - putty survive. The process of smearing cement mortar and paper ash surface layer scraping putty is: base layer treatment - coating binder (grape syrup) - scraping white putty - repairing and polishing - putty to survive.
Construction according to the process:
1. Base treatment: cast-in-place concrete wall surface, due to various reasons such as floor slab, material, and release agent, the wall surface is poorly flat, often with pores, honeycomb, pockmark, yin and yang angles, and bulging. It is required that the convex part be smoothed and the concave part should be filled and filled. For prefabricated concrete slabs and slab bases, it must be brushed by a special person with wire to remove debris such as floating sand, sputum, dust and other debris. For the cement mortar paper ash surface layer, the surface base layer is required to be dry and solid (no floating soil oil).
2, the base layer repair: after the concrete roof and the seam are cleaned, the gypsum putty is filled and compacted with a steel scraper on the large defect parts such as the honeycomb, and the horizontal surface is scraped and scraped once (the smooth top surface can not be scraped) ). The gypsum putty mix ratio (weight ratio) is gypsum: emulsion: aqueous cellulose solution (concentration 5%) = 100:5 to 6:60. Brush the fire alkali solution: brush twice with a 5% concentration of caustic soda solution, if you use a 10% concentration brush. Rinse with clean water immediately after brushing, and then dry it before proceeding to the next process.
3, the application of adhesive (milk paste): spray the glue before the putty, the spray must be uniform, no glue leakage ratio (weight ratio) is clear water: emulsion = 100: 15 ~ 20. Scratch the white putty: scrape the putty with a steel scraper to scrape back and forth, pay attention to the upper and lower sides of the joint, the two scrapers should be clean, do not allow floating putty, prevent putty or mixed sand and other debris when scraping putty . Large white putty mix ratio (weight ratio) is white powder: talcum powder: cellulose solution (concentration 5%): emulsion = 60: 4o: 75: 2 ~ 4.
4. Repair and polishing: After the first putty is scraped, the repaired parts should be reviewed. If there is any problem, use putty to make the leveling in the collapsed part. After the putty is dried, sandpaper is used to polish, smooth and sweep. net.
5, putty survive: scrape the white putty two times, wait until the first putty drying and then scrape the second time, generally requires at least two times to survive. It is required that the surface not only requires flatness but also uniform texture texture, otherwise it is prone to inconsistency in color depth and affect the decoration effect.
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