Designation:C682–94StandardPracticeforEvaluationofFrostResistanceofCoarseAggregatesinAir-EntrainedConcretebyCriticalDilationProcedures1ThisstandardisissuedunderthefixeddesignationC682;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverstheevaluationoffrostresistanceofcoarseaggregatesinair-entrainedconcrete.Itwasdevelopedparticularlyforusewithnormalweightaggregatesnothavingvesicular,highlyporousstructure.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.2.ReferencedDocuments2.1ASTMStandards:C33SpecificationforConcreteAggregates2C138TestMethodforUnitWeight,Yield,andAirContent(Gravimetric)ofConcrete2C143TestMethodforSlumpofHydraulicCementCon-crete2C150SpecificationforPortlandCement2C171SpecificationforSheetMaterialsforCuringCon-crete2C173TestMethodforAirContentofFreshlyMixedConcretebytheVolumetricMethod2C192PracticeforMakingandCuringConcreteTestSpeci-mensintheLaboratory2C231TestMethodforAirContentofFreshlyMixedConcretebythePressureMethod2C260SpecificationforAir-EntrainingAdmixturesforCon-crete2C295GuideforPetrographicExaminationofAggregatesforConcrete2C671TestMethodforCriticalDilationofConcreteSpeci-mensSubjectedtoFreezing2E104PracticeforMaintainingConstantRelativeHumiditybyMeansofAqueousSolutions32.2ACIStandard:211.1StandardPracticeforSelectingProportionsforNor-mal,Heavyweight,andMassConcrete43.SignificanceandUse3.1Thispracticeisprimarilyintendedtoprovidethepro-spectiveuserwithatechniqueforestimatingthefrostsuscep-tibilityofconcreteaggregatesforknownorassumedfieldenvironmentalconditions.Thesignificanceoftheresultsintermsofpotentialfieldperformancewilldependuponthedegreetowhichfieldconditionscanbeexpectedtocorrelatewiththoseemployedinthelaboratory.Itisofutmostimpor-tance,therefore,thattheuserofthispracticeassessatfirstthefo...
