沥青路面抗滑表层级配研究与路用性能分析

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1、西南交通大学硕士学位论文沥青路面抗滑表层级配研究与路用性能分析姓名：左贵宁申请学位级别：硕士专业：道路与铁道工程指导教师：陆阳20080601西南交通大学硕士研究生学位论文第lI页ABSTRACTCurrently,AC，AKSMAandSUPetc．arecommonlyusedinhighwaysurfacecoursegradinginOurcountry．AlthoughthedensenessofACgradingisverygood，theabilityofhightemperaturedistortionandskid-resistingcapabilityisbad．Th

2、isCaneasilycausethatthebrakeforceisdeficientandconsequentlyleadtotuafficaccidents．AlthoughAKgradinghasbetterskid—resistingcapabilityandanti·rutting．ithasbigairvoidandlessdurability．ThedensenessofSMAgradingandtheabil时of11ightemperaturedistortionandskid-resistingcapabilityisverygood，butitsengineeri

3、ngcostistoohigh，SOthatitCannotwidelypromoted．Therefore，theresearchwhichmeetstherequirementsthatCanmakevehiclequickly,safelyandcomfortably13．11"1andsolvethecontradictionofdensenessandskid-resistingcapabilityofasphaltpavementinthepremiseofgoodpavementperformancehasbecomeapopulartopicinhomeandabroad

4、nowadays。Inthisthesis，theinvestigationsincludethefollowingseveralaspects：1．Designed8kindsofgradesbyMarshallmixturdesignmethod，Superpavemixdesignmethod，SACdesignmethod，SMAdesignmethodanddeterminedtheiroptimumasphaltcontents．Bytesting，Analysethestabilityinhightemperature，skid—resistance，waterstabil

5、ityondifferentgradesasphaltmixture．Thetestingprovedthat：(1)WhenVVis4％．thedensenessandwaterdamageresistanceisgoodandasphaltmxiturehavethebestwaterstabilityonthecoarseandfmeratiois7：3：(2)Increaseingfiller-bitumenratioappropriatecanimprovethehightemperaturestability．TheasphaltmixturedesignedbySACdes

6、ingmethodandSMAdesingmethodhaveagoodhightemperaturerutresistance．(3)Theskid—resistanceofthemixtureasthecoarseaggregateincreaseintheproportionoftheincrease．2．DeterminedtheVCAofeverygrades，ReceivedtheruleaboutthegrainsizecompositionandVCA：Asphaltmixtureofl3asanexample．ifaframeworkofcoarseaggregatem

7、ainlybythe9．5mmand4．75mmconstitude．theVCAisstabilizationanditisagoodconstructiongradewhentheirratiois0．8-1．0．InspectmineralaggregategradebasedonthemethodofVCAoRFandVCAAc．TheauthorfredthatthemethodofVCAoRFcandesignandin