Plaster of Paris
is a building material used for coating walls and ceilings. It is supply as a dry powder and is mixed with water to form a paste when used. The reaction with water liberates heat through crystallization and the hydrated plaster then hardens. These are suitable for applications related to false ceiling, root designing and interior decoration work. Further, these are made using gypsum hemihydrates, which are formulated with special additives that aid in enhancing the working.