Problems needing attention in the construction process of scraping putty


Release time:

2015-09-25

Author:

New Earth Group

Source:

Problems needing attention in the construction process of scraping putty

1. Dry powderputty powderThe consumption of, how to calculate the amount of decoration?
Theoretical consumption: 1kg/m2 (batch scraping thickness 0.5mm ~ 1mm, twice); Dosage of dry powder putty = theoretical consumption × area of batch putty scraping; Batch area of putty scraping = building area of living room ×(3.5~4);
2, putty batch scraping, why the construction temperature should be above 5 ℃?
The dissolution of organic additives in putty needs to be at a certain temperature, the ambient temperature of construction is low, the dissolution rate of putty additives is very slow, and the additives cannot be fully dissolved, which will affect the construction performance and the quality of later film formation, resulting in waste of additives.
3. Why should the thickness of putty be controlled between 0.5mm ~ 1mm?
The one-time batch thickness of putty is proportional to the curing dry shrinkage strength, and the increase of dry shrinkage strength is proportional to the cracking trend of putty. Putty thickness increases, curing shrinkage strength increases, cracking trend increases. Therefore, the batch scraping thickness is less than 1mm, which can effectively reduce the curing dry shrinkage strength and avoid greasySub-cracking; However, if the thickness of the batch scraping is too thin, the putty layer will lose water too fast and cause pulverization. Therefore, the thickness of the batch scraping should be greater than 0.5mm.
4. Why should the wall surface before putty be cleaned without floating ash?
Batch putty is actually putty and wall bonding process. The bond is firm and strong, and the putty will not crack during the curing process. If there is floating ash or the wall surface is loose, the putty layer cannot be firmly bonded to the wall surface, and the putty is carried out during the curing process of the putty or under the environment of temperature and humidity changes in the four seasons.Infinite repetition of shrinkage and expansion, displacement, sliding, resulting in cracking putty.
5. Why should putty be stirred for a few minutes before stirring?
It takes a certain time for various organic additives in putty to dissolve in water. If it cannot be fully dissolved, it will affect the construction performance and the quality of later film formation, resulting in waste of additives.
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