ASTM C471
ASTM C471 – Standard Test Methods for Chemical Analysis of Gypsum and Gypsum Products (Metric) Description: Scope 1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete. 1.2 These test methods appear in the following order: Sections Preparation of Sample …