ASTM C 88/C88M : 2018 : REDLINE

1.1 This test method covers the testing of aggregates to estimate their soundness when subjected to weathering action inconcrete or other applications. This is accomplished by repeated immersion in saturated solutions of sodium or magnesium sulfatefollowed by oven drying to partially or completely dehydrate the salt precipitated in permeable pore spaces. The internal expansiveforce, derived from the rehydration of the salt upon re-immersion, simulates the expansion of water on freezing. This test methodfurnishes information helpful in judging the soundness of aggregates when adequate information is not available from servicerecords of the material exposed to actual weathering conditions.1.2 The values stated in SI or inch pound units shall be regarded separately as standard. The inch –pound units are shown inbrackets. The values stated are not exact equivalents; therefore each system shall be used independently of the other. Combiningvalues from the two systems may result in nonconformance.1.3 Some values have only SI units because the inch-pound equivalents are not used in practice.If the results obtained from another standardare not reported in the same system of units as used by this test method, it is permitted to convert those results using the conversionfactors found in the SI Quick Reference Guide.2NOTE 1—Sieve size is identified by its standard designation in Specification E11. The alternate designation given in parentheses is for information onlyand does not represent a different standard sieve size.1.5 This standard does not purport to address all of the safety problems concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appropriatesafety, health, andenvironmental practices anddetermine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.