ASTM C512/C512M-24
(Test Method)Standard Test Method for Creep of Concrete in Compression
Standard Test Method for Creep of Concrete in Compression
SIGNIFICANCE AND USE
4.1 This test method measures the load-induced time-dependent compressive strain at selected ages for concrete under an arbitrary set of controlled environmental conditions.
4.2 This test method can be used to compare creep potentials of different concretes. A procedure is available, using the developed equation (or graphical plot), for calculating stress from strain data within massive non-reinforced concrete structures. For most specific design applications, the test conditions set forth herein must be modified to more closely simulate the anticipated curing, thermal, exposure, and loading age conditions for the prototype structure. Current theories and effects of material and environmental parameters are presented in ACI SP-135, Symposium on Creep and Shrinkage of Concrete: Effect of Materials and Environment.3
4.3 In the absence of a satisfactory hypothesis governing creep phenomena, a number of assumptions have been developed that have been generally substantiated by test and experience.
4.3.1 Creep is proportional to stress from 0 to 40 % of concrete compressive strength.
4.3.2 Creep has been conclusively shown to be directly proportional to paste content throughout the range of paste contents normally used in concrete. Thus, the creep characteristics of concrete mixtures containing aggregate of maximum size greater than 50 mm [2 in.] may be determined from the creep characteristics of the minus 50-mm [minus 2-in.] fraction obtained by wet-sieving. Multiply the value of the characteristic by the ratio of the cement paste content (proportion by volume) in the full concrete mixture to the paste content of the sieved sample.
4.4 The use of the logarithmic expression (Section 9) does not imply that the creep strain-time relationship is necessarily an exact logarithmic function; however, for the period of one year, the expression approximates normal creep behavior with sufficient accuracy to make possible the calculation of parameters that are useful...
SCOPE
1.1 This test method covers the determination of the creep of molded concrete cylinders subjected to sustained longitudinal compressive load. This test method is limited to concrete in which the maximum aggregate size does not exceed 50 mm [2 in.].
1.2 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. Combining values from the two systems may result in non-conformance with the standard.
1.4 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.
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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Standards Content (Sample)
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.
Designation: C512/C512M − 24
Standard Test Method for
1
Creep of Concrete in Compression
This standard is issued under the fixed designation C512/C512M; 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.
1. Scope* drical Concrete Specimens
C125 Terminology Relating to Concrete and Concrete Ag-
1.1 This test method covers the determination of the creep
gregates
of molded concrete cylinders subjected to sustained longitudi-
C192/C192M Practice for Making and Curing Concrete Test
nal compressive load. This test method is limited to concrete in
Specimens in the Laboratory
which the maximum aggregate size does not exceed 50 mm [2
C470/C470M Specification for Molds for Forming Concrete
in.].
Test Cylinders Vertically
1.2 The text of this standard refers to notes and footnotes
C617/C617M Practice for Capping Cylindrical Concrete
that provide explanatory material. These notes and footnotes
Specimens
(excluding those in tables and figures) shall not be considered
C670 Practice for Preparing Precision and Bias Statements
as requirements of the standard.
for Test Methods for Construction Materials
1.3 Units—The values stated in either SI units or inch-
3. Terminology
pound units are to be regarded separately as standard. The
values stated in each system are not necessarily exact equiva-
3.1 For definitions of terms used in this test method refer to
lents; therefore, to ensure conformance with the standard, each
Terminology C125.
system shall be used independently of the other, and values
4. Significance and Use
from the two systems shall not be combined. Combining values
from the two systems may result in non-conformance with the
4.1 This test method measures the load-induced time-
standard.
dependent compressive strain at selected ages for concrete
1.4 This standard does not purport to address all of the under an arbitrary set of controlled environmental conditions.
safety concerns, if any, associated with its use. It is the
4.2 This test method can be used to compare creep poten-
responsibility of the user of this standard to establish appro-
tials of different concretes. A procedure is available, using the
priate safety, health, and environmental practices and deter-
developed equation (or graphical plot), for calculating stress
mine the applicability of regulatory limitations prior to use.
from strain data within massive non-reinforced concrete struc-
1.5 This international standard was developed in accor-
tures. For most specific design applications, the test conditions
dance with internationally recognized principles on standard-
set forth herein must be modified to more closely simulate the
ization established in the Decision on Principles for the
anticipated curing, thermal, exposure, and loading age condi-
Development of International Standards, Guides and Recom-
tions for the prototype structure. Current theories and effects of
mendations issued by the World Trade Organization Technical
material and environmental parameters are presented in ACI
Barriers to Trade (TBT) Committee.
SP-135, Symposium on Creep and Shrinkage of Concrete:
3
Effect of Materials and Environment.
2. Referenced Documents
4.3 In the absence of a satisfactory hypothesis governing
2
2.1 ASTM Standards:
creep phenomena, a number of assumptions have been devel-
C39/C39M Test Method for Compressive Strength of Cylin-
oped that have been generally substantiated by test and
experience.
4.3.1 Creep is proportional to stress from 0 to 40 % of
1
This test method is under the jurisdiction of ASTM Committee C09 on
Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee concrete compressive strength.
C09.61 on Testing for Strength.
4.3.2 Creep has been conclusively shown to be directly
Current edition approved Jan. 1, 2024. Published February 2024. Originally
proportional to paste content throughout the range of paste
approved in 1963. Last previous edition approved in 2015 as C512/C512M–15.
DOI: 10.1520/C0512_C0512M-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM SP-135 is currently out of print, however, the individual papers contained in the
Standards volume information, refer to the standard’s Document Summary page on publication are available from American Concrete Institute (ACI), P.O. Box 9094,
the ASTM website. Farmington Hills, MI 48333-9094, http://www.co
...
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: C512/C512M − 15 C512/C512M − 24
Standard Test Method for
1
Creep of Concrete in Compression
This standard is issued under the fixed designation C512/C512M; 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.
1. Scope Scope*
1.1 This test method covers the determination of the creep of molded concrete cylinders subjected to sustained longitudinal
compressive load. This test method is limited to concrete in which the maximum aggregate size does not exceed 50 mm [2 in.].
1.2 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding
those in tables and figures) shall not be considered as requirements of the standard.
1.3 Units—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 beare not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall
be used independently of the other. other, and values from the two systems shall not be combined. Combining values from the two
systems may result in non-conformance with the standard.
1.4 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 healthsafety, health, and environmental practices and determine
the applicability of regulatory limitations prior to use.
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:
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
C125 Terminology Relating to Concrete and Concrete Aggregates
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C470/C470M Specification for Molds for Forming Concrete Test Cylinders Vertically
C617C617/C617M Practice for Capping Cylindrical Concrete Specimens
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
3. Terminology
3.1 For definitions of terms used in this test method refer to Terminology C125.
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 Oct. 1, 2015Jan. 1, 2024. Published December 2015February 2024. Originally approved in 1963. Last previous edition approved in 20102015
as C512/C512M–10. DOI: 10.1520/C0512_C0512M-15.–15. DOI: 10.1520/C0512_C0512M-24.
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
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C512/C512M − 24
4. Significance and Use
4.1 This test method measures the load-induced time-dependent compressive strain at selected ages for concrete under an arbitrary
set of controlled environmental conditions.
4.2 This test method can be used to compare creep potentials of different concretes. A procedure is available, using the developed
equation (or graphical plot), for calculating stress from strain data within massive non-reinforced concrete structures. For most
specific design applications, the test conditions set forth herein must be modified to more closely simulate the anticipated curing,
thermal, exposure, and loading age conditions for the prototype structure. Current theories and effects of material and
environmental parameters are presented in ACI SP-135, Symposium on Creep and Shrinkage of Concrete: Effect of Materials and
3
Environment.
4.3 In the absence of a satisfactory hypothesis governing creep phenomena, a number of assumptions have been developed t
...
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