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【英文标准名称】:StandardTestMethodforDeterminingFatigueFailureofCompactedAsphaltConcreteSubjectedtoRepeatedFlexuralBending
【原文标准名称】:测定压实沥青混凝土在反复挠性弯曲情况下的疲劳断裂情况的标准试验方法
【标准号】:ASTMD7460-2010
【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】:D04.26
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:asphaltconcretefatigue;asphaltconcreteflexuraltesting;asphaltconcretestiffness;asphaltconcretetensiletesting;fatiguelife;flexuralbending;Asphaltconcrete;Fatiguelife;Flexuraltesting
【摘要】:Thelaboratoryfatiguelifedeterminedbythisstandardforbeamspecimenshavebeenusedtoestimatethefatiguelifeofasphaltconcretepavementlayersunderrepeatedtrafficloading.Althoughthefieldperformanceofasphaltconcreteisimpactedbymanyfactors(trafficvariation,speed,andwander;climatevariation;restperiodsbetweenloads;aging;etc.),ithasbeenmoreaccuratelypredictedwhenlaboratorypropertiesareknownalongwithanestimateofthestrainlevelinducedatthelayerdepthbythetrafficwheelloadtravelingoverthepavement.Note18212;Thequalityoftheresultsproducedbythisstandardaredependentonthecompetenceofthepersonnelperformingtheprocedureandthecapability,calibration,andmaintenanceoftheequipmentused.AgenciesthatmeetthecriteriaofSpecificationD3666aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithSpecificationD3666alonedoesnotcompletelyassurereliableresults.Reliableresultsdependonmanyfactors;followingthesuggestionsofSpecificationD3666orsomesimilaracceptableguidelineprovidesameansofevaluatingandcontrollingsomeofthosefactors.1.1Thistestmethodprovidesproceduresfordeterminingauniquefailurepointforestimatingthefatiguelifeof380mm(14.96in.)longby50mm(1.97in.)thickby63mm(2.48in.)wideasphaltconcretebeamspecimenssawedfromlaboratoryorfieldcompactedasphaltconcrete,whicharesubjectedtorepeatedflexuralbending.1.2Thebetween-laboratoryreproducibilityofthistestmethodisbeingdeterminedandwillbeavailableonorbeforeJune2013.Therefore,thistestmethodshouldnotbeusedforacceptanceorrejectionofamaterialforpurchasingpurposes.1.3Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4Units8212;ThevaluesstatedinSIunitsaretoberegardedasstandard.Otherunitsofmeasurementincludedinthisstandardareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E43
【国际标准分类号】:91_100_50
【页数】:13P.;A4
【正文语种】:英语