ASTM C490/C490M-17

Standard Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete

SIGNIFICANCE AND USE
4.1 This practice is intended to provide standard requirements for apparatus common to many test methods used in connection with cement and concrete and standardized procedures for its use. The detailed requirements as to materials, mixtures, specimens, conditioning of specimens, number of specimens, ages at which measurements are to be made, interpretation of results, and precision and bias are left to be dealt with in specific test methods.
SCOPE
1.1 This practice covers the requirements for the apparatus and equipment used to prepare specimens for the determination of length change in hardened cement paste, mortar, and concrete, the apparatus and equipment used for the determination of these length changes, and the procedures for its use.  
1.2 Methods for the preparation and curing of test specimens, conditions of testing and curing, and detailed procedures for calculating and reporting test results are contained in applicable test methods.  
1.3 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 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.

General Information

• Status: Historical
• Publication Date: 14-Mar-2017
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C01 - Cement
• Drafting Committee: C01.95 - Coordination of Standards

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C490/C490M − 17
Standard Practice for
Use of Apparatus for the Determination of Length Change of
1
Hardened Cement Paste, Mortar, and Concrete
This standard is issued under the fixed designation C490/C490M; 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* 4. Significance and Use
1.1 This practice covers the requirements for the apparatus
4.1 This practice is intended to provide standard require-
andequipmentusedtopreparespecimensforthedetermination
ments for apparatus common to many test methods used in
of length change in hardened cement paste, mortar, and
connection with cement and concrete and standardized proce-
concrete, the apparatus and equipment used for the determina-
dures for its use. The detailed requirements as to materials,
tion of these length changes, and the procedures for its use.
mixtures, specimens, conditioning of specimens, number of
specimens, ages at which measurements are to be made,
1.2 Methods for the preparation and curing of test
interpretation of results, and precision and bias are left to be
specimens, conditions of testing and curing, and detailed
dealt with in specific test methods.
procedures for calculating and reporting test results are con-
tained in applicable test methods.
5. Apparatus
1.3 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
5.1 Reference Masses and Devices for Determining Mass
each system may not be exact equivalents; therefore, each
and Volume, shall conform to the requirements of Specification
system shall be used independently of the other. Combining
C1005.
values from the two systems may result in non-conformance
5.2 Molds, shall have either one or two compartments and
with the standard.
shall be constructed as shown in Fig. 1 or Fig. 2. Molds for test
specimens used in determining the length change of cement
2. Referenced Documents
pastes and mortars shall provide for 25 by 25 by 285-mm
2
2.1 ASTM Standards:
1
prismshavinga250-mmgaugelength,orfor1by1by11 ⁄4-in.
C219 Terminology Relating to Hydraulic Cement
prisms having a 10–in. gauge length. Molds for test specimens
C511 Specification for Mixing Rooms, Moist Cabinets,
used in the length change of concretes shall provide for prisms
Moist Rooms, and Water Storage Tanks Used in the
of the desired cross section having a 10-in. or 250-mm gauge
Testing of Hydraulic Cements and Concretes
length. In some routine tests, 25 by 25 by 160-mm specimens
C1005 Specification for Reference Masses and Devices for
1
with a gauge length of 125 mm, or 1 by 1 by 6 ⁄4-in. specimens
Determining Mass and Volume for Use in the Physical
with a gauge length of 5-in. are permitted, but in case of
Testing of Hydraulic Cements
dispute, results obtained with specimens of 250-mm [10-in.]
gauge length shall govern.
3. Terminology
5.2.1 The gauge length shall be considered as the nominal
3.1 Definitions:
length between the innermost ends of the gauge studs. The
3.1.1 For definitions of terms used in this test method, refer
parts of the molds shall be tight fitting and firmly held together
to Terminology C219.
when assembled, and their surfaces shall be smooth and free of
pits. The molds shall be made of steel or other hard metal not
readily attacked by the cement paste, mortar, or concrete. The
1
This practice is under the jurisdiction ofASTM Committee C01 on Cement and sides of the molds shall be sufficiently rigid to prevent
is the direct responsibility of Subcommittee C01.95 on Coordination of Standards.
spreading or warping. For the molds shown in Fig. 1, the
Current edition approved March 15, 2017. Published March 2017. Originally
tolerance on dimensionAis 60.7 mm. For the molds shown in
ε1
approved in 1962. Last previous edition approved in 2011 as C490/C490M – 11 .
Fig. 2, the tolerance on dimension A is 60.03 in.
DOI: 10.1520/C0490_C0490M-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.2.2 Each end plate of the mold shall be equipped to hold
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
properly in place, during the setting period, one of the gauge
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. studs shown in Fig. 1 or Fig. 2. The gauge studs shall be of
*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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C490/C490M − 17
NOTE 1—Dimension
...

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: C490/C490M − 11 C490/C490M − 17
Standard Practice for
Use of Apparatus for the Determination of Length Change of
1
Hardened Cement Paste, Mortar, and Concrete
This standard is issued under the fixed designation C490/C490M; 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
ε NOTE—Editorial corrections were made in April 2014.
1. Scope*
1.1 This practice covers the requirements for the apparatus and equipment used to prepare specimens for the determination of
length change in hardened cement paste, mortar, and concrete, the apparatus and equipment used for the determination of these
length changes, and the procedures for its use.
1.2 Methods for the preparation and curing of test specimens, conditions of testing and curing, and detailed procedures for
calculating and reporting test results are contained in applicable test methods.
1.3 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 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C219 Terminology Relating to Hydraulic Cement
C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic
Cements and Concretes
C1005 Specification for Reference Masses and Devices for Determining Mass and Volume for Use in the Physical Testing of
Hydraulic Cements
3. Terminology
3.1 length change—Definitions: an increase or decrease in the linear dimension of a test specimen, measured along the
longitudinal axis, due to causes other than applied load.
3.1.1 For definitions of terms used in this test method, refer to Terminology C219.
4. Significance and Use
4.1 This practice is intended to provide standard requirements for apparatus common to many test methods used in connection
with cement and concrete and standardized procedures for its use. The detailed requirements as to materials, mixtures, specimens,
conditioning of specimens, number of specimens, ages at which measurements are to be made, interpretation of results, and
precision and bias are left to be dealt with in specific test methods.
5. Apparatus
5.1 Reference Masses and Devices for Determining Mass and Volume, shall conform to the requirements of Specification
C1005.
5.2 Molds, shall have either one or two compartments and shall be constructed as shown in Fig. 1 or Fig. 2. Molds for test
specimens used in determining the length change of cement pastes and mortars shall provide for 25 by 25 by 285-mm prisms
1
having a 250-mm gauge length, or for 1 by 1 by 11 ⁄4 –in. -in. prisms having a 10–in. gauge length. Molds for test specimens used
1
This practice is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.95 on Coordination of Standards.
Current edition approved Oct. 1, 2011March 15, 2017. Published November 2011March 2017. Originally approved in 1962. Last previous edition approved in 20102011
ε1
as C490/C490MC490/C490M – 11 –10. DOI: 10.1520/C0490_C0490M-11E01.10.1520/C0490_C0490M-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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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C490/C490M − 17
NOTE 1—Dimension A to be specified by the purchaser.
FIG. 1 Molds (SI Units)
in the length change of concretes shall provide for prisms of the desired cross section having a 10-in. or 250-mm gauge length.
1
In some routine tests, 25 by 25 by 160-mm specimens with a gauge length of 125 mm, or 1 by 1 by 6 ⁄4 –in. -in. specimens with
a gauge length of 5-in. are permitted, but in case of dispute, results obtained with specimens of 250-mm [10-in.] gauge length shall
govern.
5.2.1 The gauge length shall be considered as the nominal length between the innermost ends of the gauge stud
...