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ASTM C457

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

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Organization: ASTM
Publication Date: 1 July 2008
Status: inactive
Page Count: 14
scope:

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 pasteair ratio of the air-void system in hardened concrete (1).2 Two procedures are described:

Procedure A, the linear-traverse method (2, 3).

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

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.

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.

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.

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.

*A Summary of Changes section appears at the end of this standard.

2 The boldface numbers in parentheses refer to the list of references at the end of this test method.

Document History

December 1, 2016
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
December 1, 2012
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
October 1, 2011
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
June 1, 2010
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
April 1, 2010
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
July 1, 2009
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
December 15, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
October 1, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
ASTM C457
July 1, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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 pasteair ratio of the...
May 1, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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...
January 1, 2008
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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...
January 1, 2006
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
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...
July 10, 1998
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
1. 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...
October 26, 1990
Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
A description is not available for this item.
September 1, 1982
STANDARD PRACTICE FOR MICROSCOPICAL DETERMINATION OF AIR- VOID CONTENT AND PARAMETERS OF THE AIR- VOID SYSTEM IN HARDENED CONCRETE (E1-1990)
A description is not available for this item.

References

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