ASTM C1963 - 26

1.1 This test method covers the determination of the air-permeability coefficient, kT, of hardened concrete by the double-chamber vacuum cell technique. The test method is applicable to laboratory testing of specimens and to in-place testing of concrete construction. The effect of moisture is considered by parallel assessment of the near-surface moisture using Guide F2659.

1.2 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.

1.3 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.