Designation:C461−81(Reapproved2015)StandardTestMethodsforMasticsandCoatingsUsedWithThermalInsulation1ThisstandardisissuedunderthefixeddesignationC461;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverproceduresforsamplingandtestingmasticsandcoatingsforuseasweatherandvaporbarrierfinishesonthermalinsulationsandforotheraccessoryuse.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thetestmethodsappearinthefollowingorder:SectionSampling4UniformityandStorageStability5StabilityUnderFreezing6DensityandWeightperGallon7Consistency8SolidsContent9ContentofVolatilesandCoverageofMasticsandCoatings10Build11DryingTime12FlashPoint131.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C168TerminologyRelatingtoThermalInsulationC419PracticeforMakingandCuringTestSpecimensofMasticThermalInsulationCoatingsD56TestMethodforFlashPointbyTagClosedCupTesterD71TestMethodforRelativeDensityofSolidPitchandAsphalt(DisplacementMethod)D93TestMethodsforFlashPointbyPensky-MartensClosedCupTesterD140PracticeforSamplingBituminousMaterialsD217TestMethodsforConePenetrationofLubricatingGreaseD2196TestMethodsforRheologicalPropertiesofNon-NewtonianMaterialsbyRotationalViscometerD3278TestMethodsforFlashPointofLiquidsbySmallScaleClosed-CupApparatus3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthesetestmethods,seeTerminologyC168.4.Sampling4.1Priortoopeningorsampling,orboth,anymasticorcoating,itsMaterialSafet...
