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

Informationen über die Norm:

Bezeichnung normen: ASTM C457-08b
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.7.2008
Zahl der Seiten: 14
Gewicht ca.: 42 g (0.09 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM

Die Annotation des Normtextes ASTM C457-08b :

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