Designation:C801–98StandardTestMethodforDeterminingtheMechanicalPropertiesofHardenedConcreteUnderTriaxialLoads1ThisstandardisissuedunderthefixeddesignationC801;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheproceduresfortestinghardenedconcretewhensubjectedtotriaxialstressconditions.Materialsotherthanconcrete,cementpaste,ormortarareexcluded.Whenthedeterminationofthestrengthofconcreteunderatriaxialstateofstressismadeaccordingtothistestmethod,twoofthethreeprincipalstressesarealwaysequal.Thereisnoprovisionmadeforthemeasurementofporepressures;thereforeallstrengthvaluesareintermsoftotalstress.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesaremathemati-calconversionstoSIunitswhichareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:C39TestMethodforCompressiveStrengthofCylindricalConcreteSpecimens2C192PracticeforMakingandCuringConcreteTestSpeci-mensintheLaboratory2C512TestMethodforCreepofConcreteinCompression2C617PracticeforCappingCylindricalConcreteSpeci-mens2E4PracticesforLoadVerificationofTestingMachines23.SignificanceandUse3.1Thistestmethodprovidesdatausefulindeterminingthestrengthanddeformationcharacteristicsofconcretesuchasshearstrengthatvariouslateralpressures,angleofshearingresistance,strengthinpureshear,deformationmodulus,andcreepbehavior.4.Apparatus4.1LoadingDevice—Asuitabledeviceforapplyingandmeasuringaxialloadtothespecimen.Itmustbeofsufficientcapacitytoapplytherequiredloadsatspecifiedrates.Itshould...
