ASTM C22/C22M-00 (R2021) PDF Download

The ASTM C22/C22M-00 (R2021) standard is a specification that covers gypsum, specifically calcium sulfate combined with two molecules of water in crystalline form. The gypsum may need to be crushed or ground to meet the specified size requirements. Various test methods are used to determine the chemical composition and physical properties of the gypsum.

The standard provides an abstract that briefly summarizes its scope. It states that the standard covers gypsum with the chemical formula CaSO4·2H2O. This suggests that the standard is aimed at ensuring the quality and specifications of gypsum used in various applications.

It is worth noting that the standard includes references to notes and footnotes, which provide explanatory material. However, these notes and footnotes (excluding those found in tables and figures) are not considered as requirements of the specification. This implies that they serve to provide additional information and clarification but do not hold the same weight as the actual specifications outlined in the standard.