ASTM C39/C39M 15a Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens1

Features of ASTM C39/C39M 15a Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens1

This standard is issued under the fixed designation C39/C39M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the U.S. Department of Defense.

Scope of ASTM C39/C39M 15a Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens1

1.1 This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores. It is limited to concrete having a density in excess of 800 kg/m3 [50 lb/ft3].

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The inch-pound units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.