Designation:C631−09(Reapproved2014)StandardSpecificationforBondingCompoundsforInteriorGypsumPlastering1ThisstandardisissuedunderthefixeddesignationC631;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversminimumrequirementsforbondingcompoundsforadheringinteriorgypsumplastertostructurallysoundsurfaces.1.2Thisspecificationalsocoverstestmethodsfordetermin-ingperformancerequirementsandphysicalproperties.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodsdescribedinthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C11TerminologyRelatingtoGypsumandRelatedBuildingMaterialsandSystemsC28/C28MSpecificationforGypsumPlastersC472TestMethodsforPhysicalTestingofGypsum,Gyp-sumPlastersandGypsumConcreteC511SpecificationforMixingRooms,MoistCabinets,MoistRooms,andWaterStorageTanksUsedintheTestingofHydraulicCementsandConcretes3.Terminology3.1Definitions—Fordefinitionsrelatingtogypsumandrelatedbuildingmaterialsandsystems,seeTerminologyC11.4.PhysicalProperties4.1General—Thebondingcompoundshallbeafilmforming,non-oxidizing,non-toxic,non-flammablecomposi-tionsuitableforapplicationbybrush,roller,andspray.Thecompoundshallbetintedtoshow,byvisualinspection,whereithasbeenapplied.Thetintingmaterialshallnotshowthroughthematerialbeingbonded.Thesurfacestowhichbondingcompoundsareappliedshallberelativelysmooth,clean,anddry.Surfaceco...
