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ASTM International - ASTM C22/C22M-00(2021)

Standard Specification for Gypsum

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Organization: ASTM International
Publication Date: 1 April 2021
Status: active
Page Count: 2
ICS Code (Cement. Gypsum. Lime. Mortar): 91.100.10
scope:

1.1 This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form and having the approximate chemical formula CaSO4·2H2O.

1.2Â The values stated in either inch-pound units or SI (metric) are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independently of the other. Values from the two systems shall not be combined.

1.3Â The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.

1.4Â This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

abstract:

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.... View More

Document History

ASTM C22/C22M-00(2021)
April 1, 2021
Standard Specification for Gypsum
1.1 This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form and having the approximate chemical formula CaSO4·2H2O. 1.2 The values stated in...
October 1, 2015
Standard Specification for Gypsum
1.1 This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form and having the approximate chemical formula CaSO4·2H2O. 1.2 The values stated in either...
October 1, 2010
Standard Specification for Gypsum
1.1 This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form and having the approximate chemical formula CaSO4·2H2O. 1.2 The values stated in either...
October 1, 2005
Standard Specification for Gypsum
1.1 This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form and having the approximate chemical formula CaSO 4 2H 2 O. 1.2 The values stated in...
May 10, 2000
Standard Specification for Gypsum
1.1 This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form and having the approximate chemical formula CaSO4 [dot]2H2 O. 1.2 The values stated in...
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