ASTM C157/C157M-17
(Test Method)Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
SIGNIFICANCE AND USE
4.1 Measurement of length change permits assessment of the potential for volumetric expansion or contraction of mortar or concrete due to various causes other than applied force or temperature change. This test method is particularly useful for comparative evaluation of this potential in different hydraulic-cement mortar or concrete mixtures.
4.2 This test method provides useful information for experimental purposes or for products that require testing under nonstandard mixing, placing, handling, or curing conditions, such as high product workability or different demolding times. Standard conditions are described in 5.4.1.
4.3 If conditions for mixing, curing, sampling, and storage other than specified in this test method are required, they shall be reported but are not to be considered as standard conditions of this test method. Nonstandard conditions and the reasons for departure from standard conditions shall be reported clearly and prominently with comparator values.
SCOPE
1.1 This test method covers the determination of the length changes that are produced by causes other than externally applied forces and temperature changes in hardened hydraulic-cement mortar and concrete specimens made in the laboratory and exposed to controlled conditions of temperature and moisture.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. An exception is with regard to sieve sizes and nominal size of aggregate, in which the SI values are the standard as stated in Specification E11. Within the text, the SI 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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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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: C157/C157M − 17
Standard Test Method for
Length Change of Hardened Hydraulic-Cement Mortar and
1
Concrete
This standard is issued under the fixed designation C157/C157M; 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* C125 Terminology Relating to Concrete and Concrete Ag-
gregates
1.1 This test method covers the determination of the length
C143/C143M Test Method for Slump of Hydraulic-Cement
changes that are produced by causes other than externally
Concrete
applied forces and temperature changes in hardened hydraulic-
C172 Practice for Sampling Freshly Mixed Concrete
cement mortar and concrete specimens made in the laboratory
C192/C192M Practice for Making and Curing Concrete Test
and exposed to controlled conditions of temperature and
Specimens in the Laboratory
moisture.
C305 Practice for Mechanical Mixing of Hydraulic Cement
1.2 The values stated in either SI units or inch-pound units
Pastes and Mortars of Plastic Consistency
are to be regarded separately as standard.An exception is with
C490 Practice for Use ofApparatus for the Determination of
regard to sieve sizes and nominal size of aggregate, in which
Length Change of Hardened Cement Paste, Mortar, and
the SI values are the standard as stated in Specification E11.
Concrete
Within the text, the SI units are shown in brackets. The values
C511 Specification for Mixing Rooms, Moist Cabinets,
stated in each system may not be exact equivalents; therefore,
Moist Rooms, and Water Storage Tanks Used in the
each system shall be used independently of the other. Combin-
Testing of Hydraulic Cements and Concretes
ing values from the two systems may result in non-
C596 Test Method for Drying Shrinkage of Mortar Contain-
conformance with the standard.
ing Hydraulic Cement
1.3 This standard does not purport to address all of the
C1437 Test Method for Flow of Hydraulic Cement Mortar
safety concerns, if any, associated with its use. It is the
E11 Specification for Woven Wire Test Sieve Cloth and Test
responsibility of the user of this standard to establish appro-
Sieves
priate safety, health, and environmental practices and deter-
E337 Test Method for Measuring Humidity with a Psy-
mine the applicability of regulatory limitations prior to use.
chrometer (the Measurement of Wet- and Dry-Bulb Tem-
1.4 This international standard was developed in accor-
peratures)
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3. Terminology
Development of International Standards, Guides and Recom-
3.1 Definitions—The terms used in this test method are
mendations issued by the World Trade Organization Technical
defined in Terminology C125.
Barriers to Trade (TBT) Committee.
3.2 Definitions of Terms Specific to This Standard:
2. Referenced Documents 3.2.1 length change, n—an increase or decrease in the
2
lengthofatestspecimenthathasbeencausedtochangebyany
2.1 ASTM Standards:
factor other than externally applied forces and temperature
changes.
1
This test method is under the jurisdiction of ASTM Committee C09 on
4. Significance and Use
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.68 on Volume Change.
4.1 Measurement of length change permits assessment of
Current edition approved Aug. 15, 2017. Published October 2017. Originally
the potential for volumetric expansion or contraction of mortar
approved in 1940. Last previous edition approved in 2014 as C157/
ε1
C157M – 08 (2014) . DOI: 10.1520/C0157_C0157M-17.
or concrete due to various causes other than applied force or
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
temperature change. This test method is particularly useful for
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
comparative evaluation of this potential in different hydraulic-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. cement mortar or concrete mixtures.
*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
---------------------- Page: 1 ----------------------
C157/C157M − 17
FIG. 1 Atmometer
2
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C157/C157M − 17
...
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.
´1
Designation: C157/C157M − 08 (Reapproved 2014) C157/C157M − 17
Standard Test Method for
Length Change of Hardened Hydraulic-Cement Mortar and
1
Concrete
This standard is issued under the fixed designation C157/C157M; 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
ε NOTE—Editorial corrections were made in November 2014.
1. Scope*
1.1 This test method covers the determination of the length changes that are produced by causes other than externally applied
forces and temperature changes in hardened hydraulic-cement mortar and concrete specimens made in the laboratory and exposed
to controlled conditions of temperature and moisture.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. An exception is with regard
to sieve sizes and nominal size of aggregate, in which the SI values are the standard as stated in Specification E11. Within the text,
the SI 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 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:
C125 Terminology Relating to Concrete and Concrete Aggregates
C143/C143M Test Method for Slump of Hydraulic-Cement Concrete
C172 Practice for Sampling Freshly Mixed Concrete
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
C490 Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete
C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic
Cements and Concretes
C596 Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement
C1437 Test Method for Flow of Hydraulic Cement Mortar
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
3. Terminology
3.1 Definitions—The terms used in this test method are defined in Terminology C125.
3.2 Definitions of Terms Specific to This Standard:
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.68 on
Volume Change.
Current edition approved Oct. 1, 2014Aug. 15, 2017. Published November 2014October 2017. Originally approved in 1940. Last previous edition approved in 20082014
ε1
as C157/C157M – 08 (2014) . DOI: 10.1520/C0157_C0157M-08R14E01.10.1520/C0157_C0157M-17.
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
---------------------- Page: 1 ----------------------
C157/C157M − 17
3.2.1 length change, n—an increase or decrease in the length of a test specimen that has been caused to change by any factor
other than externally applied forces and temperature changes.
4. Significance and Use
4.1 Measurement of length change permits assessment of the potential for volumetric expansion or contraction of mortar or
concrete due to various causes oth
...
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