Designation:C1655−06(Reapproved2016)StandardClassificationofFireclayandHigh-AluminaMortars1ThisstandardisissuedunderthefixeddesignationC1655;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisclassificationpertainstofireclayandhigh-aluminarefractorymortarsthatcanbetrowelled,dippedorpaintedtojoinorcoatrefractorybricksandshapes.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddresssafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C199TestMethodforPierTestforRefractoryMortarsC27ClassificationofFireclayandHigh-AluminaRefractoryBrick3.SignificanceandUse3.1Refractorymortarsareusedforlaying,bondingandcoatingrefractorybrick.Theybecomeanintegralpartoftheresultingrefractoryliningorstructure.Therefore,suchmortarsshouldbeselectedinordertocloselymatchthoseofthebrick.Aclassificationsystemisprovidedforuseinproducing,purchasingandusingdifferenttypesofrefractorymortars.4.BasisofClassification4.1Heat-SettingMortars–Thisclasshardensatelevatedtemperaturebyformingaceramicbond.Theminimumtem-peraturerequiredforformingtheceramicbondisusuallyatleast2000°F(1095°C).4.2Air-SettingMortars–Thisclassinitiallyhardensatambienttemperaturesincontactwithairandformsastrongbondupondryingat230°F(110°C).4.3ChemicallyBondedMortars–Mortarsinthisclasscannotbesaidtotrulyairset,sincetheyrequiresomeheatingtoinitiatehardening.However,theyhardenattemperatureslowerthanthoserequiredforceramicbonding.Acommonexampleofachemicallybondedmortarisapho...
