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ASTM International - ASTM C457-08c

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

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Organization: ASTM International
Publication Date: 1 October 2008
Status: inactive
Page Count: 14
significance And Use:

The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete... View More

scope:

1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of the air-void system in hardened concrete (1). Two procedures are described:

1.1.1 Procedure A,

the linear-traverse method (2, 3).

1.1.2 Procedure B,

the modified point-count method (3, 4, 5, 6).

1.2 This test method is based on prescribed procedures that are applied to sawed and lapped sections of specimens of concrete from the field or laboratory.

1.3 It is intended to outline the principles of this test method and to establish standards for its adequate performance but not to describe in detail all the possible variations that might be used to accomplish the objectives of this test method.

1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

1.5 This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see 8.3 and 10.1.

Document History

July 1, 2009
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to...
December 15, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to...
ASTM C457-08c
October 1, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to...
July 1, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of...
May 1, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to...
January 1, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to...
January 1, 2006
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of...
July 10, 1998
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
1.1 This test method describes procedures for microscopical determinations of the air content of hardened concrete and of the specific surface, void frequency, spacing factor, and paste-air ratio of...
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