StudyonInfraredDifferentialThermalNondestructiveTestingTechnologyofthePermeabilityofHotMixAsphaltPavements

StudyonInfraredDifferentialThermalNondestructiveTestingTechnologyofthePermeabilityofHotMixAsphaltPavements.pdf
Inordertonondestructivetestthepermeabilitycoefficientofhotmixasphalt(HMA)pavementsfast,Amethodologyforassessingthepermeabilitycoefficientwasproposedbyinfrareddifferentialthermaltestingofpavementafterrain.TherelationshipbetweenpermeabilitycoefficientandairvoidsofHMAspecimendetermined.Finiteelementmethod(FEM)modelswerebuilttocalculatethesurfacetemperaturedifferencewithdifferentexposuretimeafterprecipitation.Simulatedsolarradiationsourceandfullysaturatedplatespecimensweresettledinlaboratory,testsverifythatthedifferentexposuretimethespecimensurfacetemperaturedifference.Infrareddifferentialthermaldetectionpermeablepavementhardwareandcorrespondingsoftwaredeveloped.Basedonalargenumberoftestresults,theevaluationindexandcriteriaofpermeabilitycoefficientofHMApavementstestedbyinfrareddifferentialthermalweredeveloped.Theresuitsshowedthat:ThereiscorrelationbetweenairvoidsandpermeabilitycoefficientofHMAspecimen.PermeabilitycoefficientofHMApavementscanbedeterminedbydifferentsurfacetemperatureatdifferentexposuretime.9:00am-14:00pmisthebesttimetodetectpermeabilitycoefficientbyinfrareddifferentialthermalNDT.Permeableasphaltpavementpermeabilitycanbeachievedbyinfrareddetectorquicklyandcontinuously,alanetesting;Accordingtothepermeableassessmentcriteria,in-placepavementspermeabilitycoefficientscanbeaccuratelyevaluated.
作者：WANGDuan-yiSHIJi-cun
作者单位：DepartmentofCivilEngineeringandTransportationSouthChinaUniversityofTechnology,Guangzhou510641,China
母体文献：国际道路联盟中国研讨会暨中国公路学会2015年学术年会论文集
会议名称：国际道路联盟中国研讨会暨中国公路学会2015年学术年会  
会议时间：2015年9月20日
会议地点：重庆
主办单位：中国公路学会
语种：chi
分类号：
关键词：HMApavements  permeabilitycoefficient  infrareddifferentialthermal  permeabilityindex
在线出版日期：2018年11月22日
基金项目：
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