ASTM C39/C39M-17a
(Test Method)Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
SIGNIFICANCE AND USE
5.1 Care must be exercised in the interpretation of the significance of compressive strength determinations by this test method since strength is not a fundamental or intrinsic property of concrete made from given materials. Values obtained will depend on the size and shape of the specimen, batching, mixing procedures, the methods of sampling, molding, and fabrication and the age, temperature, and moisture conditions during curing.
5.2 This test method is used to determine compressive strength of cylindrical specimens prepared and cured in accordance with Practices C31/C31M, C192/C192M, C617/C617M, C1176/C1176M, C1231/C1231M, and C1435/C1435M, and Test Methods C42/C42M, C873/C873M, and C1604/C1604M.
5.3 The results of this test method are used as a basis for quality control of concrete proportioning, mixing, and placing operations; determination of compliance with specifications; control for evaluating effectiveness of admixtures; and similar uses.
5.4 The individual who tests concrete cylinders for acceptance testing shall meet the concrete laboratory technician requirements of Practice C1077, including an examination requiring performance demonstration that is evaluated by an independent examiner.
Note 1: Certification equivalent to the minimum guidelines for ACI Concrete Laboratory Technician, Level I or ACI Concrete Strength Testing Technician will satisfy this requirement.
SCOPE
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.
1.3 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—Means should be provided to contain concrete fragments during sudden rupture of specimens. Tendency for sudden rupture increases with increasing concrete strength and it is more likely when the testing machine is relatively flexible. The safety precautions given in the Manual are recommended.)
1.4 The text of this standard references notes which provide explanatory material. These notes shall not be considered as requirements of the standard.
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.
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Designation: C39/C39M − 17a
Standard Test Method for
1
Compressive Strength of Cylindrical Concrete Specimens
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.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers determination of compressive
C31/C31M Practice for Making and Curing Concrete Test
strength of cylindrical concrete specimens such as molded
Specimens in the Field
cylinders and drilled cores. It is limited to concrete having a
3 3
C42/C42M Test Method for Obtaining and Testing Drilled
density in excess of 800 kg/m [50 lb/ft ].
Cores and Sawed Beams of Concrete
1.2 The values stated in either SI units or inch-pound units
C125 Terminology Relating to Concrete and Concrete Ag-
are to be regarded separately as standard.The inch-pound units
gregates
are shown in brackets. The values stated in each system may
C192/C192M Practice for Making and Curing Concrete Test
not be exact equivalents; therefore, each system shall be used
Specimens in the Laboratory
independently of the other. Combining values from the two
C617/C617M Practice for Capping Cylindrical Concrete
systems may result in non-conformance with the standard.
Specimens
1.3 This standard does not purport to address all of the
C670 Practice for Preparing Precision and Bias Statements
safety concerns, if any, associated with its use. It is the
for Test Methods for Construction Materials
responsibility of the user of this standard to establish appro-
C873/C873M Test Method for Compressive Strength of
priate safety and health practices and determine the applica-
Concrete Cylinders Cast in Place in Cylindrical Molds
bility of regulatory limitations prior to use. (Warning—Means
C1077 Practice forAgencies Testing Concrete and Concrete
should be provided to contain concrete fragments during
Aggregates for Use in Construction and Criteria for
sudden rupture of specimens. Tendency for sudden rupture
Testing Agency Evaluation
increaseswithincreasingconcretestrengthanditismorelikely
C1176/C1176M Practice for Making Roller-Compacted
when the testing machine is relatively flexible. The safety
Concrete in Cylinder Molds Using a Vibrating Table
precautions given in the Manual are recommended.)
C1231/C1231M Practice for Use of Unbonded Caps in
1.4 The text of this standard references notes which provide
Determination of Compressive Strength of Hardened Cy-
explanatory material. These notes shall not be considered as
lindrical Concrete Specimens
requirements of the standard.
C1435/C1435M Practice for Molding Roller-Compacted
1.5 This international standard was developed in accor- Concrete in Cylinder Molds Using a Vibrating Hammer
C1604/C1604M Test Method for Obtaining and Testing
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the Drilled Cores of Shotcrete
E4 Practices for Force Verification of Testing Machines
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical E18 Test Methods for Rockwell Hardness of Metallic Ma-
terials
Barriers to Trade (TBT) Committee.
E74 Practice of Calibration of Force-Measuring Instruments
for Verifying the Force Indication of Testing Machines
Manual of Aggregate and Concrete Testing
1
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
2
C09.61 on Testing for Strength. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 15, 2017. Published May 2017. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1921. Last previous edition approved in 2017 as C39/C39M – 17. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0039_C0039M-17A. 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
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C39/C39M − 17a
3. Terminology operations; determination of compliance with specifications;
control for evaluating effectiveness of admixtures; and similar
3.1 Definitions—For definitions of terms used in this
uses.
practice, refer to Terminology C125.
5.4 The individual who tests concrete cylinders for accep-
3.2
...
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: C39/C39M − 17 C39/C39M − 17a
Standard Test Method for
1
Compressive Strength of Cylindrical Concrete Specimens
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.
1. Scope*
1.1 This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders
3 3
and drilled cores. It is limited to concrete having a density in excess of 800 kg/m [50 lb/ft ].
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.
1.3 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—Means should be provided to contain concrete fragments during sudden rupture of specimens.
Tendency for sudden rupture increases with increasing concrete strength and it is more likely when the testing machine is relatively
flexible. The safety precautions given in the Manual are recommended.)
1.4 The text of this standard references notes which provide explanatory material. These notes shall not be considered as
requirements of the standard.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field
C42/C42M Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
C125 Terminology Relating to Concrete and Concrete Aggregates
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C617/C617M Practice for Capping Cylindrical Concrete Specimens
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
C873/C873M Test Method for Compressive Strength of Concrete Cylinders Cast in Place in Cylindrical Molds
C1077 Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency
Evaluation
C1176/C1176M Practice for Making Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Table
C1231/C1231M Practice for Use of Unbonded Caps in Determination of Compressive Strength of Hardened Cylindrical
Concrete Specimens
C1435/C1435M Practice for Molding Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Hammer
C1604/C1604M Test Method for Obtaining and Testing Drilled Cores of Shotcrete
E4 Practices for Force Verification of Testing Machines
E18 Test Methods for Rockwell Hardness of Metallic Materials
E74 Practice of Calibration of Force-Measuring Instruments for Verifying the Force Indication of Testing Machines
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.61 on
Testing for Strength.
Current edition approved Feb. 1, 2017March 15, 2017. Published March 2017May 2017. Originally approved in 1921. Last previous edition approved in 20162017 as
C39/C39M – 16b.17. DOI: 10.1520/C0039_C0039M-17.10.1520/C0039_C0039M-17A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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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C39/C39M
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