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ASTM C1012/C1012M-24a

Current Revision

Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution

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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 for 7 days at 38 °C, 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.


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.

SDO ASTM: ASTM International
Document Number C1012
Publication Date Oct. 15, 2024
Language en - English
Page Count 9
Revision Level 24a
Supercedes
Committee C01.29
Publish Date Document Id Type View
Oct. 15, 2024 C1012_C1012M-24A Revision
April 1, 2024 C1012_C1012M-24 Revision
Dec. 15, 2018 C1012_C1012M-18B Revision
Feb. 1, 2018 C1012_C1012M-18A Revision
Jan. 1, 2018 C1012_C1012M-18 Revision
Oct. 1, 2015 C1012_C1012M-15 Revision
Jan. 1, 2013 C1012_C1012M-13 Revision
April 1, 2012 C1012_C1012M-12 Revision
Dec. 15, 2010 C1012_C1012M-10 Revision
Dec. 15, 2009 C1012_C1012M-09 Revision