How to prevent the problem of gray calcium-based putty powder grinding peeling at low temperature?

1
, heavy calcium fineness should be reasonable. Suitable fineness, can ensure the sandpaper traces of fine, smooth.2
, reduce the hardness of the putty surface. In winter, with the summer formula, putty surface in wet conditions contact with carbon dioxide in the air for a long time, film hardness is much higher than the hardness of summer performance, and putty coating, because the temperature is low, dry too slow, hardness is often not as hard as the same formula in summer gel produced hardness, outside too hard, inside too soft, there is a grinding de-layering phenomenon. To solve this problem, we must reduce the surface hardness of putty, how to solve it? Start by reducing the amount of time that gray calcium powder hardens into film in the air under humid conditions.first: let the bottom dry through another batch of the next layer, do not give the surface putty in wet conditions too much reaction to carbon dioxide.second: adjust the formula to prevent putty surface to produce "water light" (i.e., excessive film hardening), the production of "water light", putty surface hard through the high while hindering the air carbon dioxide penetration into the interior, resulting in internal strength is too low to stand up to grinding.3
, to improve putty cohesion strength, internal wear resistance.First: by optimizing the formula to prevent the production of "water light" on the putty surface, in order to help the air carbon dioxide penetrate into the putty layer, improve the gel strength inside the putty layer, improve internal
wear resistance
;