FATIGUEPERFORMANCEANDPREDICTIONMODELOFMULTILAYERDECKPAVEMENTWITHDIFFERENTTACKCOATMATERIALS.pdf
Concretebridgedecksoverlayedwithasphaltwearingcoursesoftenwitnessearlydistresses,suchasshoving,potholes,ravelingandslippagecrackingduetopoorbondsbetweenthetwolayerswithdifferentmodulus.Frequentlyusedlaboratorytests,including"direct"sheartest,pull-offtest,andtorsionalsheartest,cannotfullyrepresentthecriticalconditionshappeninginthefields.Inthisstudy,shearfatiguetestunderrepetitiveloadsatanangleof45°wasdevelopedinstead.Threetackcoatmaterials,includingSBSmodifiedasphalt,emulsifiedasphalt,andepoxyresin,werechosenasbindingmaterialstoformmulti-layerdeckpavementspecimens.Theirperformanceswereevaluatedthroughshearfatiguetestonuniversaltestmachine.Theshearstressandsheardisplacementofeachspecimenatfailurewerefirstlyidentified,andthenfourlevelsofstresswereselectedtoperformtheshearfatiguetest,basedonwhichafatiguepredictionmodelwasdeveloped.Toapproximatethelaboratoryresultstofieldloadscenarios,anadjustmentfactor,representingtheimpactsofdifferentloadcombinationsonfatiguelife,wasintroduced.Itisfoundinthestudythatepoxyresinmaterialhasaremarkablysuperiorshearfatigueperformancecomparedtotheothertwoandtheadjustmentfactorisheavilyaffectedbytheloadcombinations.
作者：HaotianLi
作者单位：ResearchCenterofRoadStructureandMaterialEngineeringTechnology,HebeiResearchInstituteofCommunicationsSurveyandDesign120＃ZhenGangRoad,ShiJiaZhuang,HeBei,P.R.China,050091
母体文献：2015年度中国公路学会计算机应用分会年会暨互联网+在交通领域中的应用学术交流会论文集
会议名称：2015年度中国公路学会计算机应用分会年会暨互联网+在交通领域中的应用学术交流会
会议时间：2015年11月1日
会议地点：石家庄
主办单位：中国公路学会
语种：chi
分类号：
关键词：tackcoatmaterials shearfatiguedamage predictionmodel adjustmentfactor
在线出版日期：2018年8月29日
基金项目：
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