TAILIEUCHUNG - Designation: C 28/C 28M – 00 - Gypsum Plasters1

This standard is issued under the fixed designation C 28/C 28M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. | ij Designation C 28 C 28M - 00 Standard Specification for Gypsum Plasters1 This standard is issued under the fixed designation c 28 C 28M the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision. A number in parentheses indicates the year of last rerpprovrl. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope This specification covers four gypsum ppassers gypsum mill-mixed plaster gypsum neat plaster gypsum wood fibcrcd plaster and gypsum gauging plaster. The values stated in either inch-pound or SI metric units 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. This paragraph does not apply to the appendix. The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes excluding those in tables and gures shall not be considered as requirements of the standard. The following safety hazards caveat pertains only to the test methods described in the appendix to this speci cation. This standard does not purport to address all of the safety concerns if any associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 2. Referenced Documents ASTM Standards C 11 Terminology Relating to Gypsum and Related Building Materials and Systems2 C 22 Speci íní n for Gypsum2 C 35 Speci ínìi n for Inorganic Aggregaaes for Use in Gypsum Plaster2 C471M Test Methods for Chemical Analysis of Gypsum and Gypsum Products2 C 472 Test Methods for Physical Testing of Gypsum Gypsum Plasters and .

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