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SETTING OF GYPSUM PRODUCTS. The reverse of reaction (1) describes the reaction of calcium sulfate hemihydrate powder with water to produce gypsum - (CaSO4 ) 2.H2O 3H2O 2CaSO4 . 2H2O ; unreacted (CaSO4 ) 2 1/2 H2O heat ; The heat evolved in the exothermic reaction is equivalent to the heat used originally in calcination.

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Types of Gypsum Used for and garden soil to improve fertilizer efficiency and promote root growth. Use to aid water penetration. Use to loosen tight soils. Provides 0.5 cu. ft. of soil softener. - .

Gypsum Products and Properties as a Building Material for ...

Types of Gypsum Products and their Uses. Gypsum Plaster Boards –Plasterboard are panels used as partitions and for the lining of walls and the ceilings. Used for Plaster for Decoration – The combination of gypsum powder with water makes gypsum plaster that support the formation of beautiful aesthetically pleasing linings for ceilings or ...

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