ASTM C920-18 Standard Specification for Elastomeric Joint Sealant

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1、Designation:C920−18StandardSpeciÞcationfor1ElastomericJointSealantsThisstandardisissuedunderthefixeddesignationC920;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesind

2、icatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.ScopeC717TerminologyofBuildingSealsandSealantsC719TestMethodforAdhesionandC

3、ohesionofElasto-1.1ThisASTMspecificationcoversthepropertiesofamericJointSealantsUnderCyclicMovement(Hockmancuredsingle-ormulticomponentcold-appliedelastomericjointCycle)sealantforsealing,caulking,orglazingoperationsonC793TestMethodforEffectsofLaboratoryAccelera

4、tedbuildings,plazas,anddecksforvehicularorpedestrianuse,WeatheringonElastomericJointSealantsandtypesofconstructionotherthanhighwayandairfieldC794TestMethodforAdhesion-in-PeelofElastomericJointpavementsandbridges.Sealants1.2Asealantmeetingtherequirementsofthissp

5、ecificationC1183TestMethodforExtrusionRateofElastomericSeal-shallbedesignatedbythemanufacturertobeoneormoreofantsthetypes,classes,grades,andusesdefinedinSection7.C1193GuideforUseofJointSealants1.3ThevaluesstatedinSIunitsaretoberegardedastheC1246TestMethodforEffe

6、ctsofHeatAgingonWeightstandard.ThevaluesgiveninparenthesesareforinformationLoss,Cracking,andChalkingofElastomericSealantsonly.AfterCureC1247TestMethodforDurabilityofSealantsExposedto1.4Thisstandardissimilar,butnotidentical,toISO11600ContinuousImmersioninLiquid

7、sandISO11618.C1442PracticeforConductingTestsonSealantsUsing1.5Thisinternationalstandardwasdevelopedinaccor-ArtificialWeatheringApparatusdancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesforthe3.TerminologyDevelopm

8、entofInternationalStandards,GuidesandRecom-3.1Definitions—RefertoTerminologyC717fordefinitionsmendationsissuedbytheWorldTradeOrganizationTechnicalofthefollowingtermsusedinthisspecific