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ASTM C61/C61M-00(2020)
Standard Specification for Gypsum Keene´s Cement
NORMA vydaná dňa 1.6.2020
Informácie o norme:
Označenie normy: ASTM C61/C61M-00(2020)
Dátum vydania normy: 1.6.2020
Kód tovaru: NS-997544
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM C61/C61M-00(2020) :
This specification covers various grades of anhydrous calcined gypsum known as gypsum Keene´s cement, designed for use in the base and finish coats of gypsum plaster. The cement shall show a combined water content not more than the specified value when tested in accordance with the referenced test method. The cement shall conform to the required physical properties and shall undergo tests on setting time, compressive strength, and fineness.
Keywords:
anhydrous gypsum, gypsum, gypsum Keene´s cement, gypsum plaster, Keene´s cement, plaster ,, ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)
Doplňujúce informácie
| 1. Scope | ||||||||
|
1.1 This specification covers various grades of anhydrous calcined gypsum known as gypsum Keene's cement, designed for use in the base and finish coats of gypsum plaster. Note 1: The setting time is accelerated by the addition of
other materials.
Note 2: Keene's cements are generally available as
quick-setting and standard-setting types. However, various grades
of gypsum Keene's cement of different fineness and setting time are
available. Grades intended for use in scagliola castings and other
special purposes should conform to the requirements of this
specification in all respects except fineness and setting
time.
1.2 The values stated in either inch-pound or SI (metric) units are to be regarded separately as 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. 1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard. 1.4 The following safety hazards caveat pertains only to the test method in the appendix of this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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. |
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| 2. Referenced Documents | ||||||||
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