Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete (Includes all amendments And changes 12/31/2010).

The information about the standard:

Designation standards: ASTM C457-08a
Note: NEPLATNÁ
Publication date standards: 1.5.2008
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: American technical standard
Kategorie: Technické normy ASTM

Annotation of standard text ASTM C457-08a :

Keywords:
air content, air void parameters of hardened concrete, area-prepared surface required, average chord-length of voids, determination of air-void parameters, entrained void, entrapped void, grits for lapping hardened concrete, index point, lapping, length of traverse required, linear-traverse method, microscopical, number of points required, paste-air ratio, paste-air ratio modification, paste content, point-count method (modified), sample preparation for microscopical analysis, spacing factor