ASTM D4799-2008 沥青材料加速风化试验条件和方法的标准实施规程(荧光UV,洒水冷凝法)

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【英文标准名称】:StandardPracticeforAcceleratedWeatheringTestConditionsandProceduresforBituminousMaterials(FluorescentUV,WaterSpray,andCondensationMethod)
【原文标准名称】:沥青材料加速风化试验条件和方法的标准实施规程(荧光UV,洒水冷凝法)
【标准号】:ASTMD4799-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D08.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:acceleratedweathering;bituminousmaterials;degradation;exposure;fluorescentUVandcondensation;lightexposure;roofing;ultraviolet;waterproofing;FluorescentUV-lightapparatus;Lightexposure;Ultraviolet(UV)analysis;Acceleratedaging/testing
【摘要】:Thisweatheringapparatusisusedforcomparingtheweatheringcharacteristicsofbituminousmaterialsagainstacontrolmaterialforwhichtheoutdoorweatheringcharacteristicsareknown.Itisnotpossibletoestablishaprecisecorrelationbetweenacceleratedandnaturalweatheringbecause(1)therearegeographicalclimaticvariations,localweathervariations,andvariationsinlocalpollutants,and(2)therelationbetweenacceleratedandnaturalweatheringismaterialdependent.Accelerationfactorsdifferbetweenmaterialsaswellasbetweenformulationsofthesamematerial.GuideG141providesguidanceregardingthisissue.Note18212;Thispracticecanbeusedforotherthanbituminousmaterials,butthesignificanceandusehavenotbeenevaluated.1.1ThispracticedescribestestconditionsandproceduresforfluorescentUVandcondensationexposuresconductedaccordingtoPracticesG151andG154forbituminousroofingandwaterproofingmaterialsthathaveaminimumsofteningpointofapproximately95x00B0;C(200x00B0;F)asdeterminedbyTestMethodD36.(AlsoseeTerminologyG113.)1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E43
【国际标准分类号】:93_080_20
【页数】:3P.;A4
【正文语种】:英语