ASTM C341/C341M-18
(Practice)Standard Practice for Preparation and Conditioning of Cast, Drilled, or Sawed Specimens of Hydraulic-Cement Mortar and Concrete Used for Length Change Measurements
Standard Practice for Preparation and Conditioning of Cast, Drilled, or Sawed Specimens of Hydraulic-Cement Mortar and Concrete Used for Length Change Measurements
SIGNIFICANCE AND USE
4.1 Measurements of length change permit assessment of the potential for volumetric expansion or contraction of cast, drilled, or sawed specimens of hydraulic-cement mortar, and concrete due to various causes other than externally applied forces and temperature changes. This practice is particularly useful for comparative evaluation of this potential in different mortar or concrete specimens.
SCOPE
1.1 This practice covers the procedures for the preparation and conditioning of cast, drilled, or sawed specimens of hydraulic-cement mortar and concrete for length change due to causes other than externally applied forces. It can be readily adapted, if desired, to studies of length change involving alternative schedules or environmental treatments.
1.2 The values stated in either inch-pound units or SI units shall be regarded separately as standard. The units stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining in any way. The inch-pound units are shown in brackets.
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: C341/C341M − 18
Standard Practice for
Preparation and Conditioning of Cast, Drilled, or Sawed
Specimens of Hydraulic-Cement Mortar and Concrete Used
1
for Length Change Measurements
This standard is issued under the fixed designation C341/C341M; 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* C31/C31M Practice for Making and Curing Concrete Test
Specimens in the Field
1.1 This practice covers the procedures for the preparation
C42/C42M Test Method for Obtaining and Testing Drilled
and conditioning of cast, drilled, or sawed specimens of
Cores and Sawed Beams of Concrete
hydraulic-cement mortar and concrete for length change due to
C157/C157M Test Method for Length Change of Hardened
causes other than externally applied forces. It can be readily
Hydraulic-Cement Mortar and Concrete
adapted, if desired, to studies of length change involving
C192/C192M Practice for Making and Curing Concrete Test
alternative schedules or environmental treatments.
Specimens in the Laboratory
1.2 The values stated in either inch-pound units or SI units
C490/C490M Practice for Use of Apparatus for the Deter-
shall be regarded separately as standard. The units stated in
mination of Length Change of Hardened Cement Paste,
each system may not be exact equivalents; therefore, each
Mortar, and Concrete
system must be used independently of the other, without
C666/C666M Test Method for Resistance of Concrete to
combining in any way. The inch-pound units are shown in
Rapid Freezing and Thawing
brackets.
3. Terminology
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
3.1.1 For definitions of terms used in this practice, refer to
priate safety, health, and environmental practices and deter-
Terminology C125.
mine the applicability of regulatory limitations prior to use.
3.2 Definitions of Terms Specific to This Standard:
1.4 This international standard was developed in accor-
3.2.1 length change, n—an increase or decrease in a linear
dance with internationally recognized principles on standard-
dimension of a test specimen, which has been caused to change
ization established in the Decision on Principles for the
by any factor other than externally applied forces and tempera-
Development of International Standards, Guides and Recom-
ture changes.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
4. Significance and Use
4.1 Measurements of length change permit assessment of
2. Referenced Documents
the potential for volumetric expansion or contraction of cast,
2
2.1 ASTM Standards:
drilled, or sawed specimens of hydraulic-cement mortar, and
A276/A276M Specification for Stainless Steel Bars and
concrete due to various causes other than externally applied
Shapes
forces and temperature changes. This practice is particularly
C125 Terminology Relating to Concrete and Concrete Ag-
useful for comparative evaluation of this potential in different
gregates
mortar or concrete specimens.
5. Apparatus
1
This practice is under the jurisdiction of ASTM Committee C09 on Concrete
andConcreteAggregatesandisthedirectresponsibilityofSubcommitteeC09.68on
5.1 Length Comparator—The length comparator shall gen-
Volume Change.
erally conform to the requirements of Specification C490/
Current edition approved Dec. 1, 2018. Published January 2019. Originally
C490M, except that it shall be constructed to accommodate the
approved in 1954. Last previous edition approved in 2013 as C341/C341M – 13.
DOI: 10.1520/C0341_C0341M-18.
specimens to be tested under this practice, which shall have
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
gauge lengths of 75 mm [3 in.] or more.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1.1 Gauge Studs in Ends of Specimens—When the com-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. parator is to be used to measure between gauge studs in the
*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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C341/C341M − 18
ends of specimens, the gauge length for computing percentage 5.3 Drying
...
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: C341/C341M − 13 C341/C341M − 18
Standard Practice for
Preparation and Conditioning of Cast, Drilled, or Sawed
Specimens of Hydraulic-Cement Mortar and Concrete Used
1
for Length Change Measurements
This standard is issued under the fixed designation C341/C341M; 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*
1.1 This practice covers the procedures for the preparation and conditioning of cast, drilled, or sawed specimens of
hydraulic-cement mortar and concrete for length change due to causes other than externally applied forces. It can be readily
adapted, if desired, to studies of length change involving alternatealternative schedules or environmental treatment other than the
standard procedures prescribed by this practice.treatments.
1.2 The values stated in either inch-pound units or SI units shall be regarded separately as standard. The units stated in each
system may not be exact equivalents; therefore, each system must be used independently of the other, without combining in any
way. The inch-pound units are shown in brackets.
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:
A276A276/A276M Specification for Stainless Steel Bars and Shapes
C125 Terminology Relating to Concrete and Concrete Aggregates
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
C157/C157M Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C490C490/C490M Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar,
and Concrete
C666/C666M Test Method for Resistance of Concrete to Rapid Freezing and Thawing
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this practice, refer to Terminology C125.
3.2 DefinitionDefinitions of Terms Specific to This Standard:
3.2.1 length change, n—an increase or decrease in a linear dimension of a test specimen, which has been caused to change by
any factor other than externally applied forces and temperature changes.
1
This practice 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 Dec. 15, 2013Dec. 1, 2018. Published January 2014January 2019. Originally approved in 1954. Last previous edition approved in 20062013 as
C341/C341M – 065.C341/C341M – 13. DOI: 10.1520/C0341_C0341M-13.10.1520/C0341_C0341M-18.
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 ----------------------
C341/C341M − 18
4. Significance and Use
4.1 Measurements of length change permit assessment of the potential for volumetric expansion or contraction of cast, drilled,
or sawed specimens of hydraulic-cement mortar, and concrete due to various causes other than externally applied forces and
temperature changes. This practice is particularly useful for comparative evaluation of this potential in different mortar or concrete
specimens.
5. Apparatus
5.1 Length Comparator—The length comparator shall generally conform to the requirements of Specification C490C490/
C490M, except that it shall be
...
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