高速公路SMA沥青混凝土技术的研究与应用

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1、合肥工业大学硕士学位论文高速公路SMA沥青混凝土技术的研究与应用姓名：严任苗申请学位级别：硕士专业：土木与建筑工程指导教师：柳炳康20070901DeformableAnalysisofThePrestressedSubassemblageConcreteFrameAbstractStoneMasticAsphaltPavementfSMAroad)isaremarkablenewpavement．AstheclimateandtramcconditionsinChinaaredifierentfrominEuropeandtheUnitedState

2、s．thetestsectionpavedeverywherehavenotonlysuccessfulexperiences．butalsolesSOnsoffailure．Inordel"todevelopSMAtechnologyinChina,andthroughanalysisofclm．meteristicsaboutcomplexterrain,rainfall，andmorefog，thevisibilitypoor,sumlnar岫出temperatureslastedforalongtime，U'a伍cconditionsere．i

3、nAnhuiSouthwestMountain．andSOlvingsomeploblemsabouttheHe-LiuexpresswayhnWtoadapttoheavytrafficvolume，overwel’ght,lorsoflongandsteepslopes，andbasedonSMAresearchachievementsathomeandabroad．TaiwanAH一70群asphaltandTaipukeAH．70asphaltat-eselected，andmodifiedbySBSmodifieratthesite，thet

4、echnologyindicatorsofmodifiedasphaltwereanalyzedandstudiedsystematicly．Onthisbasis，themodifiedasphaltconcreteSMApilotprogramisdesignedthroughanalysisofthethreekindsoffiber,differentSMAmodifiedasphaltductilityandsofteningpoint．TheregionwhichiSsuitableforthevariousfiberSMAmodified

5、asphaltbinderratioofthepowderiSidentified．InordeltoensuretoforillSMAdenseske!etonstructure，thecoarscaggregategradationhasbeenoptimizedbythewayofuniformdesignduringtheresearch．Fineaggregategradationiscalculatedusingkwaywiththeprincipleoffillingdensely．SMAmixturemixdesignadoptedth

6、ewayofMarshallspecimenvolume．111estabilityandflowvalueinMarshalltestarenotessentialindicatorstodetermineacceptanceandrejectedmixdesignattheSMAgradedmix，avarietyofSMAprimitivegrademixiSidentified，andtheconceptofeffectiveasphaltiSintrodueted．sevenkindsofSMAmixtureareoptimizedbythe

7、keyparanaetersaboutWvolume，VCA，VFA，VMA,andotherindicators，anditshi曲temperaturestability,waterstability,durabilityandslipresistance，JOWtemperaturecrackingofthe1"0adperformance，andotherimportantfactorsandtheimpaetareanalysisedsystematic．Atthesametime．thefatiguepropertiesofSMAcrack

8、resistanceandlOWtemperatureperformancearealSOst