Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete

Informácie o norme:

Označenie normy: ASTM C457/C457M-12
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.12.2012
Počet strán: 15
Približná hmotnosť: 45 g (0.10 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

Anotácia textu normy ASTM C457/C457M-12 :

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