1.1 These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete. 1.2 The test methods appear in the following sections: These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete. Test methods are detailed for the following: precautions for physical tests, reagents and materials, free water, fineness, normal consistency of gypsum plast