Designation:C832−00(Reapproved2015)StandardTestMethodofMeasuringThermalExpansionandCreepofRefractoriesUnderLoad1ThisstandardisissuedunderthefixeddesignationC832;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheprocedureformeasuringthelinearchangeofrefractoryspecimensthataresubjectedtocompressivestresswhilebeingheatedandwhilebeingheldatelevatedtemperatures.1.2Thistestmethoddoesnotapplytomaterialswhosestrengthdependsonpitchorcarbonaceousbondsunlessappropriateatmosphericcontrolisused(see7.3).1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1maximumdilation—thepercentexpansionwherethethermal-expansionrateequalsthecreep-deformationrate.Itcanbeusedinestimatingthermal-expansionreliefwhenusedinconjunctionwiththetemperatureatmaximumdilation.3.1.2temperatureatmaximumdilation—inadditiontoes-timatingthermal-expansionrelief,itcanbeusedtorankproductsintermsofrelativerefractoriness.Ingeneral,thehigherthetemperatureatmaximumdilation,themorerefrac-torytheproductandthebetteritisabletoresistdeformationatelevatedtemperatures.3.1.320to50hcreep—thepercentdeformationbetweenthe20and50hcanbeusedtorankproductsintermsofrelativeloadbearingcapacityataparticulartemperature.Relativerankingsofvariousprodu...
