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Fast drying of gypsum

Nov 16, 2021

Gypsum is the dihydrate Gypsum is heated to extract the water of crystallization and ground to a powder. Some plasters contain additives to improve the texture and or adhesion etc Out of date plaster is best disposed of, as it either sets very fast (Flash sets) or doesnt set at all. 2CaS04.2H2O (heat) 2(CaSO4).H2O + 3H2O

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