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ID:36567871
大小:3.98 MB
页数:92页
时间:2019-05-12
《沥青路面抗滑表层级配研究与路用性能分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
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
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