Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
|Publication Date:||1 July 2009|
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.
2 The boldface numbers in parentheses refer to the list of references at the end of this test method.
*A Summary of Changes section appears at the end of this standard.