1.1 This test method covers the determination of length change of mortar bars immersed in a sulfate solution at a temperature of 5.0 2.0 C [41.0 3.5 F]. Mortar bars made using mortar described in Test Method C109/C109M are cured until they attain a compressive strength of 20.0 1.0 MPa [3000 150 psi], as measured using cubes made of the same mortar, before the bars are immersed. 1.2 The purpose of this test method is limited to the evaluation of the resistance to thaumasite sulfate attack of cementitious binders containing more than 5% interground limestone. 1.3 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. 1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.
Keywordsacceptability; expansion; fly ash; mortars; pozzolans; slag; thaumasite sulfate attack; sulfate-resisting cements; tests
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
R. Doug Hooton
Negative Votes Need Resolution