ASTM C22
Full Name
ASTM C22 – Standard Specification for Gypsum
Scope
This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form. If necessary, gypsum shall be crushed or ground, or both, to the size specified.
Different test methods shall be performed in order to determine the chemical composition and physical properties of gypsum.
Keywords
calcium sulfate; gypsum