ASTM C1038/C1038M-24
(Test Method)Standard Test Method for Expansion of Hydraulic Cementitious Material Mortar Bars Stored in Water
Standard Test Method for Expansion of Hydraulic Cementitious Material Mortar Bars Stored in Water
SIGNIFICANCE AND USE
4.1 This test method is used to determine the amount of expansion of a mortar bar when it is stored in water. The amount of mortar-bar expansion may relate to the amount of sulfate in the cementitious material; expansion may become excessive when the cementitious material contains too much sulfate.
4.2 Some cementitious material specifications limit the amount of sulfate contained in those materials by requiring that the amount of expansion in water not exceed a specified value.
SCOPE
1.1 This test method covers the determination of the expansion of mortar bars made using hydraulic cementitious materials, of which sulfate is an integral part.
1.2 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.
1.3 The text of this standard refers to notes and footnotes that provide explanatory material. These notes shall not be considered as requirements of 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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2)
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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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: C1038/C1038M − 24
Standard Test Method for
Expansion of Hydraulic Cementitious Material Mortar Bars
1
Stored in Water
This standard is issued under the fixed designation C1038/C1038M; 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* Hydraulic Cement Mortars (Using 50 mm [2 in.] Cube
Specimens)
1.1 This test method covers the determination of the expan-
C114 Test Methods for Chemical Analysis of Hydraulic
sion of mortar bars made using hydraulic cementitious
Cement
materials, of which sulfate is an integral part.
C125 Terminology Relating to Concrete and Concrete Ag-
1.2 The values stated in either SI units or inch-pound units
gregates
are to be regarded separately as standard. The values stated in
C219 Terminology Relating to Hydraulic and Other Inor-
each system may not be exact equivalents; therefore, each
ganic Cements
system shall be used independently of the other. Combining
C305 Practice for Mechanical Mixing of Hydraulic Cement
values from the two systems may result in non-conformance
Pastes and Mortars of Plastic Consistency
with the standard.
C490 Practice for Use of Apparatus for the Determination of
Length Change of Hardened Cement Paste, Mortar, and
1.3 The text of this standard refers to notes and footnotes
that provide explanatory material. These notes shall not be Concrete
C511 Specification for Mixing Rooms, Moist Cabinets,
considered as requirements of the standard.
Moist Rooms, and Water Storage Tanks Used in the
1.4 This standard does not purport to address all of the
Testing of Hydraulic Cements and Concretes
safety concerns, if any, associated with its use. It is the
C778 Specification for Standard Sand
responsibility of the user of this standard to establish appro-
C1005 Specification for Reference Masses and Devices for
priate safety, health, and environmental practices and deter-
Determining Mass and Volume for Use in Physical Testing
mine the applicability of regulatory limitations prior to use.
of Hydraulic Cements
(Warning—Fresh hydraulic cementitious mixtures are caustic
C1437 Test Method for Flow of Hydraulic Cement Mortar
and may cause chemical burns to skin and tissue upon
2
prolonged exposure. )
3. Terminology
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.1 Definitions:
ization established in the Decision on Principles for the
3.1.1 See Terminology C219 and Terminology C125.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Significance and Use
Barriers to Trade (TBT) Committee.
4.1 This test method is used to determine the amount of
expansion of a mortar bar when it is stored in water. The
2. Referenced Documents
amount of mortar-bar expansion may relate to the amount of
3
2.1 ASTM Standards:
sulfate in the cementitious material; expansion may become
C109/C109M Test Method for Compressive Strength of
excessive when the cementitious material contains too much
sulfate.
1
This test method is under the jurisdiction of ASTM Committee C01 on Cement
4.2 Some cementitious material specifications limit the
and is the direct responsibility of Subcommittee C01.28 on Sulfate Content.
amount of sulfate contained in those materials by requiring that
Current edition approved April 1, 2024. Published April 2024. Originally
approved in 1985. Last previous edition approved in 2019 as C1038/C1038M – 19. the amount of expansion in water not exceed a specified value.
DOI: 10.1520/C1038_C1038M-24.
2
Section on Safety, Manual of Cement Testing, Annual Book of Standards,
5. Apparatus
Vol. 04.01.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1 Reference Masses and Mass-Determining Devices, con-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
forming to the requirements of Specification C1005. Evaluate
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the device for precision and bias at a total load of 2 kg.
*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 ----------------------
C1038/C1038M − 24
5.2 Glass Graduates, Molds, and Length Comparator, con- 8.3.2 Mix the mortar in accordance with the procedure
forming
...
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: C1038/C1038M − 19 C1038/C1038M − 24
Standard Test Method for
Expansion of Hydraulic Cement Cementitious Material
1
Mortar Bars Stored in Water
This standard is issued under the fixed designation C1038/C1038M; 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 test method covers the determination of the expansion of mortar bars made using hydraulic cement, cementitious
materials, of which sulfate is an integral part.
1.2 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.
1.3 The text of this standard refers to notes and footnotes that provide explanatory material. These notes shall not be considered
as requirements of 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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns
2
to skin and tissue upon prolonged exposure. )
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
3
2.1 ASTM Standards:
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 50 mm [2 in.] Cube Specimens)
C114 Test Methods for Chemical Analysis of Hydraulic Cement
C125 Terminology Relating to Concrete and Concrete Aggregates
C219 Terminology Relating to Hydraulic and Other Inorganic Cements
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
C778 Specification for Standard Sand
1
This test method is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.28 on Sulfate Content.
Current edition approved Dec. 15, 2019April 1, 2024. Published January 2020April 2024. Originally approved in 1985. Last previous edition approved in 20142019 as
C1038/C1038M – 14b.C1038/C1038M – 19. DOI: 10.1520/C1038_C1038M-19.10.1520/C1038_C1038M-24.
2
Section on Safety, Manual of Cement Testing, Annual Book of Standards, Vol. 04.01.
3
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 ----------------------
C1038/C1038M − 24
C1005 Specification for Reference Masses and Devices for Determining Mass and Volume for Use in Physical Testing of
Hydraulic Cements
C1437 Test Method for Flow of Hydraulic Cement Mortar
3. Terminology
3.1 Definitions:
3.1.1 See Terminology C219 and Terminology C125.
4. Significance and Use
4.1 This test method is used to determine the amount of expansion of a mortar bar when it is stored in water. The amount of
mortar-bar expansion may relate to the amount of sulfate in the cement; cementitious material; expansion may become excessive
when the cement cementitious material contains too much sulfate.
4.2 Some cement cementitious material specifications limit the amount of sulfate contained in hydraulic cementthose materials by
requiring that the amount of expansion in water not exceed a specified value.
5. Apparatus
5.1 Reference Masses and Mass-Determining D
...
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