Designation:C210−95(Reapproved2014)StandardTestMethodforReheatChangeofInsulatingFirebrick1ThisstandardisissuedunderthefixeddesignationC210;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationoftheperma-nentlinear(andvolume)changeofinsulatingfirebrickuponreheatingunderprescribedconditions.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C24TestMethodforPyrometricConeEquivalent(PCE)ofFireclayandHighAluminaRefractoryMaterialsC155ClassificationofInsulatingFirebrickE230SpecificationandTemperature-ElectromotiveForce(EMF)TablesforStandardizedThermocouplesE1256TestMethodsforRadiationThermometers(SingleWavebandType)3.SignificanceandUse3.1Insulatingfirebrick(IFB)areclassifiedbytheirbulkdensityandreheatchange(seeClassificationC155).ThistestmethoddefinesthermalstabilitybymeasurementofIFB’sreheatchangefollowing24hatatesttemperature.3.2Sincethistestexposestheentiresampletoanisothermaltemperaturecondition,theusershouldbeawarethatmostapplicationsforIFBinvolveathermalgradientwhichmaycausetheIFB’sdimensionstochangedifferentially.4.Apparatus4.1Thetestkilnshallbecapableofmaintainingtherequiredtemperaturewithavariationofnotmorethanonehalfastandardpyrometricconeoverthehearthareaduringtheprescribedheatingschedule.Ifagas-oroil-firedkilnisused,itshallbeofthedowndrafttypeandofsuchadesignasnottopermittheflamefromtheburnertoimpingeu...
