Designation:C1099−07(Reapproved2012)StandardTestMethodforModulusofRuptureofCarbon-ContainingRefractoryMaterialsatElevatedTemperatures1ThisstandardisissuedunderthefixeddesignationC1099;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthemodu-lusofruptureofcarbon-containingrefractoriesatelevatedtemperaturesinair.1.2Thevaluesstatedininch-poundunitsanddegreesFahrenheitaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection5.2.ReferencedDocuments2.1ASTMStandards:2C583TestMethodforModulusofRuptureofRefractoryMaterialsatElevatedTemperaturesE220TestMethodforCalibrationofThermocouplesByComparisonTechniques2.2ISOStandard:ISORecommendation5013DeterminationoftheHotModulusofRuptureofShapedandUnshapedDenseandInsulatingRefractoryProducts33.SignificanceandUse3.1Themodulusofruptureofcarbon-containingrefracto-riesatelevatedtemperatureshasbecomeacceptedasausefulmeasurementinqualitycontroltestingandinresearchanddevelopment.Thesemeasurementsarealsousedtodeterminethesuitabilityofparticularproductsforvariousapplicationsandtodevelopspecifications.Thesamplemayundergosomeoxidationduringthetest.3.2In1988,ruggednesstestingwasconductedonthistestprocedure.Thefollowingvariableswerestudied:3.2.1Testingtemperature(2525(1385)versus2575°F(1413°C)),3.2.2Airatmosphereversusargonatmosphereinthefurnace,3.2.3Holdtimepriortobreakingthesample(12versus18min),and3.2.4Loadingrateonthesample(175(778)versus350lb/min(1556N/min)).3.3Resinbondedmagnesia-carbonbric...
