ASTM C172/C172M-17
Standard Practice for Sampling Freshly Mixed Concrete

Standard No.

ASTM C172/C172M-17

Release Date

2017

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C172/C172M-17

Scope

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.

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 nonagitating 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.

Note 1: Composite samples are required by this practice, unless specifically excepted by procedures governing the tests to be performed such as tests to determine uniformity of consistency and mixer efficiency. Procedures used to select the specific test batches are not described in this practice, but it is recommended that random sampling be used to determine overall specification compliance.

1.3 This practice also covers the procedures to be used for preparing a sample of concrete for further testing where it is desirable or necessary to remove the aggregate larger than a designated size. This removal of larger aggregate particles is preferably accomplished by wet-sieving.

1.4 The text of this standard references notes and footnotes which provide explanatory material and shall not be considered as requirements of the practice.

1.5 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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2)

1.6 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 (T......

ASTM C172/C172M-17 Referenced Document

• ASTM C685/C685M Standard Specification for Concrete Made by Volumetric Batching and Continuous Mixing
• ASTM E11 Standard Specification for Wire Cloth and Sieves for Testing Purposes

ASTM C172/C172M-17 history

• 2017 ASTM C172/C172M-17 Standard Practice for Sampling Freshly Mixed Concrete
• 2014 ASTM C172/C172M-14a Standard Practice for Sampling Freshly Mixed Concrete
• 2014 ASTM C172/C172M-14 Standard Practice for Sampling Freshly Mixed Concrete
• 2010 ASTM C172/C172M-10 Standard Practice for Sampling Freshly Mixed Concrete
• 2008 ASTM C172-08 Standard Practice for Sampling Freshly Mixed Concrete
• 2007 ASTM C172-07a Standard Practice for Sampling Freshly Mixed Concrete
• 2007 ASTM C172-07 Standard Practice for Sampling Freshly Mixed Concrete
• 2004 ASTM C172-04 Standard Practice for Sampling Freshly Mixed Concrete
• 1999 ASTM C172-99 Standard Practice for Sampling Freshly Mixed Concrete