ASTM C172/C172M − 14a Standard Practice for Sampling Freshly Mixed Concrete

Scope of ASTM C172/C172M − 14a Standard Practice for Sampling Freshly Mixed Concrete

1.1 This practice covers procedures for obtaining representative samples of fresh concrete as delivered to the

project site on which tests are to be performed to determine compliance with quality requirements of the specifications under which the concrete is furnished (Note 1).

The practice includes sampling from stationary, paving and truck mixers, and from agitating and non-agitating equipment used to transport central-mixed concrete and from continuous mixing equipment as described in Specification C685/C685M.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard.

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.

Significance of ASTM C172/C172M − 14a Standard Practice for Sampling Freshly Mixed Concrete

3.1 This practice is intended to provide standard requirements and procedures for sampling freshly mixed concrete from different containers used in the production or transportation of concrete.

The detailed requirements as to materials, mixtures, air content, temperature, number of specimens, slump, interpretation of results, and precision and bias are in specific test methods.