Astm c472

Solo disponible en BuenasTareas
  • Páginas : 2 (337 palabras )
  • Descarga(s) : 0
  • Publicado : 4 de mayo de 2011
Leer documento completo
Vista previa del texto
ASTM C472
Abstract
These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete. Test methods are detailed for the following: precautions for physical tests,reagents and materials, free water, fineness, normal consistency of gypsum plaster and gypsum concrete, setting time, setting time (temperature rise method), compressive strength, and density. Materialsinclude distilled or deionized water and standard sand. For each test method, the following are specified: significance and use, apparatus, and procedure.
This abstract is a brief summary of thereferenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warrantyexpress or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1. Scope
1.1 These test methods cover the physical testing of gypsum, gypsumplasters, and gypsum concrete.
1.2 The values regarded as the standard are either in inch-pound units or SI (metric). The values stated first shall be regarded as the standard. Values following inparentheses are approximate and are provided for information purposes only.
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes(excluding those in tables and figures) are not requirements of the standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific precautionarystatement, see X1.2.1.

2. Referenced Documents
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
C778 Specification for Standard Sand
E11 Specification for Wire Cloth and...
tracking img