ASTM C1012/C1012M-24
(Test Method)Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution
Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution
SIGNIFICANCE AND USE
3.1 This test method provides a means of assessing the sulfate resistance of mortars made using portland cement, blends of portland cement with pozzolans or slags, and blended hydraulic cements. Test Method C452 is suitable for evaluating portland cements but not blended cements or blends of portland cement with pozzolans or slags.
3.2 The standard exposure solution used in this test method, unless otherwise directed, contains 352 moles of Na2SO4 per m3(50 g/L). Other sulfate concentrations or other sulfates such as MgSO4 may be used to simulate the environmental exposure of interest. Further discussion of these and other technical issues is given in the Appendix.
SCOPE
1.1 This test method covers the determination of length change of mortar bars immersed in a sulfate solution. Mortar bars made using mortar described in Test Method C109/C109M are cured until they attain a compressive strength of 20.0 MPa ± 1.0 MPa [3000 psi ± 150 psi], as measured using cubes made of the same mortar, before the bars are immersed.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound 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: C1012/C1012M − 24
Standard Test Method for
Length Change of Hydraulic-Cement Mortars Exposed to a
1
Sulfate Solution
This standard is issued under the fixed designation C1012/C1012M; 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* C114 Test Methods for Chemical Analysis of Hydraulic
Cement
1.1 This test method covers the determination of length
C150/C150M Specification for Portland Cement
change of mortar bars immersed in a sulfate solution. Mortar
C157/C157M Test Method for Length Change of Hardened
bars made using mortar described in Test Method C109/
Hydraulic-Cement Mortar and Concrete
C109M are cured until they attain a compressive strength of
C215 Test Method for Fundamental Transverse,
20.0 MPa 6 1.0 MPa [3000 psi 6 150 psi], as measured using
Longitudinal, and Torsional Resonant Frequencies of
cubes made of the same mortar, before the bars are immersed.
Concrete Specimens
1.2 The values stated in either SI units or inch-pound units
C305 Practice for Mechanical Mixing of Hydraulic Cement
are to be regarded separately as standard. Within the text, the
Pastes and Mortars of Plastic Consistency
inch-pound units are shown in brackets. The values stated in
C348 Test Method for Flexural Strength of Hydraulic-
each system may not be exact equivalents; therefore, each
Cement Mortars
system shall be used independently of the other. Combining
C349 Test Method for Compressive Strength of Hydraulic-
values from the two systems may result in non-conformance
Cement Mortars (Using Portions of Prisms Broken in
with the standard.
Flexure)
1.3 This standard does not purport to address all of the
C452 Test Method for Potential Expansion of Portland-
safety concerns, if any, associated with its use. It is the
Cement Mortars Exposed to Sulfate
responsibility of the user of this standard to establish appro-
C490/C490M Practice for Use of Apparatus for the Deter-
priate safety, health, and environmental practices and deter-
mination of Length Change of Hardened Cement Paste,
mine the applicability of regulatory limitations prior to use.
Mortar, and Concrete
1.4 This international standard was developed in accor-
C511 Specification for Mixing Rooms, Moist Cabinets,
dance with internationally recognized principles on standard-
Moist Rooms, and Water Storage Tanks Used in the
ization established in the Decision on Principles for the
Testing of Hydraulic Cements and Concretes
Development of International Standards, Guides and Recom-
C595/C595M Specification for Blended Hydraulic Cements
mendations issued by the World Trade Organization Technical
C597 Test Method for Ultrasonic Pulse Velocity Through
Barriers to Trade (TBT) Committee.
Concrete
2. Referenced Documents
C618 Specification for Coal Ash and Raw or Calcined
2
Natural Pozzolan for Use in Concrete
2.1 ASTM Standards:
C778 Specification for Standard Sand
C109/C109M Test Method for Compressive Strength of
C917/C917M Test Method for Evaluation of Variability of
Hydraulic Cement Mortars (Using 50 mm [2 in.] Cube
Cement from a Single Source Based on Strength
Specimens)
C989/C989M Specification for Slag Cement for Use in
Concrete and Mortars
1
This test method is under the jurisdiction of ASTM Committee C01 on Cement
C1157/C1157M Performance Specification for Hydraulic
and is the direct responsibility of Subcommittee C01.29 on Sulfate Resistance.
Cement
Current edition approved April 1, 2024. Published April 2024. Originally
D1193 Specification for Reagent Water
approved in 1984. Last previous edition approved in 2018 as C1012/C1012M – 18b.
DOI: 10.1520/C1012_C1012M-24. E18 Test Methods for Rockwell Hardness of Metallic Ma-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
terials
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
E177 Practice for Use of the Terms Precision and Bias in
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ASTM Test Methods
*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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C1012/C1012M − 24
E691 Practice for Conducting an Interlaboratory Study to tions of the Committee on Analytical Reagents for the
Determine the Precision of a Test Method American Chemical Society where such specificati
...
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: C1012/C1012M − 18b C1012/C1012M − 24
Standard Test Method for
Length Change of Hydraulic-Cement Mortars Exposed to a
1
Sulfate Solution
This standard is issued under the fixed designation C1012/C1012M; 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 length change of mortar bars immersed in a sulfate solution. Mortar bars made
using mortar described in Test Method C109/C109M are cured until they attain a compressive strength of 20.020.0 MPa 6 1.0 MPa
[3000[3000 psi 6 150 psi], as measured using cubes made of the same mortar, before the bars are immersed.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the
inch-pound 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.
2. Referenced Documents
2
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
C150/C150M Specification for Portland Cement
C157/C157M Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
C215 Test Method for Fundamental Transverse, Longitudinal, and Torsional Resonant Frequencies of Concrete Specimens
C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
C348 Test Method for Flexural Strength of Hydraulic-Cement Mortars
C349 Test Method for Compressive Strength of Hydraulic-Cement Mortars (Using Portions of Prisms Broken in Flexure)
C452 Test Method for Potential Expansion of Portland-Cement Mortars Exposed to Sulfate
C490/C490M 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
1
This test method is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.29 on Sulfate Resistance.
Current edition approved Dec. 15, 2018April 1, 2024. Published January 2019April 2024. Originally approved in 1984. Last previous edition approved in 2018 as
C1012/C1012M – 18a.C1012/C1012M – 18b. DOI: 10.1520/C1012_C1012M-18B.10.1520/C1012_C1012M-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
1
---------------------- Page: 1 ----------------------
C1012/C1012M − 24
C595/C595M Specification for Blended Hydraulic Cements
C597 Test Method for Ultrasonic Pulse Velocity Through Concrete
C618 Specification for Coal Ash and Raw or Calcined Natural Pozzolan for Use in Concrete
C778 Specification for Standard Sand
C917/C917M Test Method for Evaluation of Variability of Cement from a Single Source Based on Strength
C989/C989M Specification for Slag Cement for Use in Concrete and Mortars
C1157/C1157M Performance Specification for Hydraulic Cement
D1193 Specification for Reagent Water
E18 Test Methods for Rockwell Hardness of Metallic Materials
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Method
...
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