Plaster

Gypsum is a mineral binder material obtained by heat treatment of gypsum stone and is a powdery product of calcination of calcium sulfate dihydrate: CaSO4 × 2H2O. Usually consists of no more than two minerals: α- and β-CaSO4 - gypsum and selenite. It is used in construction as a filler for concrete and reinforced concrete structures, used to relieve stress in reinforced concrete structures from shrinkage and during their subsequent hardening, as well as for the production of dry building mixtures, plasterboard sheets, dry putties and other dry hydraulic binders. According to certain requirements, gypsum powder is used to produce refractory materials, and glass fiber reinforced gypsum can be used as a raw material for gypsum casting molds. Gypsum does not contain harmful or aggressive substances. It is an environmentally friendly natural product used both in construction and in everyday life. However, at the same time, gypsum is a brittle material that, when crushed, can