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【英文标准名称】:StandardTestMethodforEvaluatingDurabilityofBuildingConstructionSealantsbyLaboratoryAcceleratedWeatheringProcedures
【原文标准名称】:实验室加速风化法评估建筑密封胶的标准试验方法
【标准号】:ASTMC1519-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C24.40
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:artificialaging;artificialweathering;buildingsealants;durability;jointmovement;sealants;weathering;Acceleratedaging/testing--sealants;Artificialweathering;Durability--buildingmaterials/applications;Durability--sealants;Jointmovem
【摘要】:Thistestmethoddescribestheproceduretoevaluateorcompare,orboth,thedurabilityofsealantswhensubjectedtoacceleratedweatheringandcyclicmovementinajoint.Sealantinstallationprocedures,designconsiderationsandmovementduringcureaffecttheagingprocessesandarefundamentaltothesuccessofanysealant.Thesefactorsarenotaddressedwiththistestmethod.Theamount,typeandfrequencyofmovementasealantexperiencesduringitslifetimestronglydependsonthematerialsusedinconstructionandontheorientationofthejointtowardsunlightandmanyotherfactorsthatarenotuniformorconsistent.Climaticexposureswilldifferwiththeorientationofthebuildingandshadingaswellaswithlocalandregionalclimaticconditions.Climatesinagivenlocationcanvaryfromyeartoyearbecauseofdifferencesinsolarradiation,temperature,rainfall,andatmosphericconditions.Further,thequalityandintensityofsolarradiationontheearth''ssurfacevarieswithgeographiclocation,season,timeofday,andcloudcover.Variationsinresultsmaybeexpectedwhenoperatingconditionsarevariedwithintheacceptedlimitsofthistestmethod.Therefore,alltestresultsusingthistestmethodmustbeaccompaniedbyareportofthespecificoperatingconditionsasrequiredinSection12.RefertoPracticeG151fordetailedinformationonthecaveatsapplicabletouseofresultsobtainedaccordingtothistestmethod.Theresultsoflaboratoryexposurecannotbedirectlyextrapolatedtoestimateanabsoluterateofdeteriorationcausedbynaturalweatheringbecausetheaccelerationfactorismaterialdependentandcanbesignificantlydifferentforeachmaterialandfordifferentformulationsofthesamematerial.However,exposureofasimilarmaterialofknownoutdoorperformance,acontrol,alongwiththetestspecimensallowscomparisonofthedurabilityrelativetothatofthecontrolunderthetestconditions.Evaluationintermsofrelativedurabilityalsogreatlyimprovestheagreementintestresultsamongdifferentlaboratories.ResultsofthisprocedurewilldependonthecarethatistakentooperatetheequipmentaccordingtoPracticesG154andG155.Significantfactorsincluderegulationofthelinevoltage,freedomfromsaltorotherdepositsfromwater,temperaturecontrol,humiditycontrol,whereapplicable,conditionandageoftheburnersandfiltersinxenonarcequipment,andageoflampsinfluorescentUVequipment.Note18212;Additionalinformationonsourcesofvariabilityandonstrategiesforaddressingvariabilityinthedesign,executionanddataanalysisoflaboratoryacceleratedexposuretestsisfoundinGuideG141.1.1Thistestmethodcoversthemethodforthedeterminationofthedurabilityofasealantbasedonitsabilitytofunctionincyclicmovementmaintainingadhesionandcohesionafterrepeatedexposuretolaboratoryacceleratedweatheringprocedures.1.2Thistestmethoddescribestwolaboratoryacceleratedweatheringproceduresforevaluatingthedurabilityofasealant.1.3RILEMTC139x2013;DBSisrelatedtothistestmethod.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety......
【中国标准分类号】:Q24
【国际标准分类号】:91_040_01
【页数】:5P.;A4
【正文语种】:英语