Designation:D7051−05(Reapproved2013)StandardTestMethodforCyclicThermalShockofSBS-ModifiedBituminousRoofingSheetswithFactory-AppliedMetalSurface1ThisstandardisissuedunderthefixeddesignationD7051;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThistestmethodcoversthemeasurementofmovementduetocyclicthermalexposureofSBS(styrene-butadiene-styrene)-modifiedbituminoussheetswithafactory-appliedmetalfoilsurface.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesinparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C552SpecificationforCellularGlassThermalInsulationD41SpecificationforAsphaltPrimerUsedinRoofing,Dampproofing,andWaterproofingD312SpecificationforAsphaltUsedinRoofingD5147TestMethodsforSamplingandTestingModifiedBituminousSheetMaterial3.SummaryofTestMethod3.1Thistestconsistsofexposingtwospecimensof200065by9065mm(78.760.2by3.560.2in.)tocyclesoftemperatureproducedbyinfraredradiation.Thevariationinthespecimenlengthdimensionismeasuredinrelationtothenumberofcyclesandtemperaturevariation.ThistestappliestometalfoilsurfacedSBS-modifiedbitumenroofingsheets.4.SignificanceandUse4.1Thistestmethodisusedtodeterminethedimensionalchangesandphysicalstabilityoftheproductuponexposuretospecifiedcyclicthermalconditions.Itisalsousefulindeter-miningtheintegrityofthebondbetweenthemetalfoilandtheSBS-modifiedbituminouscompound.5.Apparatus5.1TheapparatusandtestassemblyasshowninFigs.1-4consistsofthefollowingcomponents.5.2Ahollowmetal,rigidsupportorbaseonwhichthetestsampleismounted,hereafterreferredtoasthesho...
