ASTM C172-08

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C 172–07a Designation:C172–08
Standard Practice for
1
Sampling Freshly Mixed Concrete
This standard is issued under the fixed designation C172; 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 Department of Defense.
1. Scope*
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
isfurnished(Note1).Thepracticeincludessamplingfromstationary,pavingandtruckmixers,andfromagitatingandnonagitating
equipment used to transport central-mixed concrete.
1.2The values stated in SI units are to be regarded as the standard.The values shown in parentheses are provided for information
only.
1.2 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.
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 Thispracticealsocoverstheprocedurestobeusedforpreparingasampleofconcreteforfurthertestingwhereitisdesirable
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 and health 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
2
tissue upon prolonged exposure. )
2. Referenced Documents
3
2.1 ASTM Standards:
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Significance and Use
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.
4. Sampling
4.1 The elapsed time shall not exceed 15 min. between obtaining the first and final portions of the composite sample.
4.1.1 Transport the individual samples to the place where fresh concrete tests are to be performed or where test specimens are
to be molded. They shall be combined and remixed with a shovel the minimum amount necessary to ensure uniformity and
compliance with the maximum time limits specified in 4.1.2.
4.1.2 Start tests for slump, temperature, and air content within 5 min after obtaining the final portion of the composite sample.
1
This practice is under the jurisdiction ofASTM Committee C09 on Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee C09.60 onTesting
Fresh Concrete.
Current edition approved Dec. 15, 2007.June 1, 2008. Published JanuaryJuly 2008. Originally approved in 1942. Last previous edition approved in 2007 as C172 – 07a.
DOI: 10.1520/C0172-08.
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Annual Book of ASTM Standards, Vol 04.02.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C 172–04 Designation:C172–08
Standard Practice for
1
Sampling Freshly Mixed Concrete
This standard is issued under the fixed designation C172; 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 (ϵ) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
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
isfurnished(Note1).Thepracticeincludessamplingfromstationary,pavingandtruckmixers,andfromagitatingandnonagitating
equipment used to transport central-mixed concrete.
1.2The values stated in SI units are to be regarded as the standard.The values shown in parentheses are provided for information
only.
1.2 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.
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 Thispracticealsocoverstheprocedurestobeusedforpreparingasampleofconcreteforfurthertestingwhereitisdesirable
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 and health 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
2
tissue upon prolonged exposure. )
2. Referenced Documents
3
2.1 ASTM Standards:
E11 Specification for Wire-Cloth and Sieves for Testing Purposes Specification for Woven Wire Test Sieve Cloth and Test
Sieves
3. Significance and Use
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.
4. Sampling
4.1 The elapsed time shall not exceed 15 min. between obtaining the first and final portions of the composite sample.
4.1.1 Transport the individual samples to the place where fresh concrete tests are to be performed or where test specimens are
to be molded. They shall be combined and remixed with a shovel the minimum amount necessary to ensure uniformity and
compliance with the maximum time limits specified in 4.1.2.
1
This practice is under the jurisdiction ofASTM Committee C09 on Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee C09.60 onTesting
Fresh Concrete.
Current edition approved June 1, 2004.2008. Published June 2004.July 2008. Originally approved in 1942. Last previous edition approved in 19992007 as C
172–99.C172 – 07a. DOI: 10.1520/C0172-08.
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Annual Book of ASTM Standards, Vol 04.02.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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C172–08
4.1.2
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