8 years on Allbiz
Construction plaster represents the waterless sulfate of calcium received from the plaster mineral (water sulfate salt of calcium) processed in powder and dehydrated. At contact with water physical and chemical reaction causes fast crystallization and hardening of mix. There is a set of the grades of plaster differing in a grinding (very fine crushing for modeling, more rough - for construction etc.) and skhvatyvaniye speed. For example, at installation of partitions from plaster panels sticky plaster, and is applied to plaster - the usual plaster containing for simplification of work with it of an additive, slowing down its skhvatyvaniye.
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