Designation:C1643−14StandardTestMethodtoMeasuringthePostDispensingVolumetricExpansionofAerosolFoamSealants1ThisstandardisissuedunderthefixeddesignationC1643;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodmeasuresthevolumetricexpansionofaerosolfoamsealantsafterdispensing.1.2Thistestmethodprovidesameansforestimatingthequantityofinitialmaterialrequiredtodispenseinordertofillacavity.1.3Aerosolfoamsealantsareusedforavarietyofapplica-tionsintendedtoreduceairflowthroughthebuildingenvelope.1.4Thistestmethodappliestotwotypesofsinglecompo-nentaerosolfoamsealants:polyurethaneandlatex.1.5Therearenootherknownstandardtestmethodstomeasureaerosolfoamsealantspostdispensingexpansion.1.6ValuesarereportedinSIunitsonly.Certainapparatusandsupplyitemsarereferencedininch-poundunitsforpurchasingpurposes.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C717TerminologyofBuildingSealsandSealantsC1620SpecificationforAerosolPolyurethaneandAerosolLatexFoamSealants3.Terminology3.1Definitions:3.1.1RefertoTerminologyC717fordefinitionsofthefollowingtermsusedinthistestmethod:aerosolfoamsealant,postdispensingcontraction,postdispensingexpansion,andstandardconditions.4.SummaryofTestMethod4.1ProcedureA—Forsinglecomponentpolyurethaneaero-solfoamsealants.4.1.1Aerosolfoamsealantisdispensedintoaluminumchannels.4.1.2Postdispensingvolumetricexpansionisdeterminedbythevolumeofthefoamexpandedfromthechannel.4.1.3Postdispensingvolumetricexpansionfactoriscalcu-latedbymeasuringthevolumetricdisplacementofthecuredfoam.4.2ProcedureB—Forsinglecomponentlatexaer...
