纤维沥青混合料性能试验研究

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1、重庆交通学院硕士学位论文纤维沥青混合料性能试验研究姓名：杨大田申请学位级别：硕士专业：道路与铁道工程指导教师：杨锡武20050429ABSTRACTModemroadtransportationisdevelopedtothedirectionofthehighspeed、over-loading、greattrafficquantityandtrafficconvergence，whichbnngforwardthehigherdemandstotheasphaltmixturepavementperformance．Bec

2、ausetheasphaltmixturepavementhastheparticularsuperiority,ithasaveryimportantstatusinthepavement，butinfacttherearemanyquestionsoftheskillsandqualityinacting，forexample，theforepartstrictdisrepair、tooshortlife-span、surfaceperformance、ruttingandcriticalcrack，whichputsfo

3、rwardtoausterechallengetopavementworkers．Forsettlingtheseexistentquestionsintheasphaltpavement，everycountryresearchershavebeenstudyingagreatnumberofworks，andgainedmoreharvests．ItisoneoftheeffectivewaystojoinfibersintothecomInonasphaltmixture．TheMarshalltestoftheDola

4、nitoASfiberasphaltconcreteandofthesteelfiberasphaltconcreteWascarriedouttostudytheinfluenceonthepavementperformance，SOastorevealthechanginglawofMarshallindex．ConsequentlyDolanit。ASfiberincreasestheasphaltdosageby0．2percenttoO．3percent,steelfiberhardlydoesthedosage．n

5、lephysicsvolumeindexischangedinthefiberasphaltmixture．Dolanit@ASfibermakesthedynamicstabilityenhancetosomecontent，bycontraststeelfiberreducesit．Atthesamecondition．thefluidindexofthebitumenmixturealladd．MoremakinguseoftheRuttingInstrument、theSplittingInstrumentandthe

6、Vacuum—negativePressureEquipment,theHighTemperatureAnti·distortion、theLow-TemperatureAnti—splittingandtheWaterStabilityaretested，andthecausesthatinfluencetheirfruitsareanalyzedintheailaspects．Underthesmalldosage，DynamicStabilityandtheLowtemperatureanti·splittingperf

7、ormanceallareimprovedwell．Theperformanceofthewaterstabilityisbad．Consideringaboveallfactors，soRfibersandrigidfibersarepreferablyemployedinthedenseaggregategradation，andtherangesofjoiningquantityinthemixtureareseparately0．15percentto0．2percent(Dolanit雪ASfiber)and2per

8、centt02．5percent(steelfiber)．Onthebaseoftestandanalysis，theusingconditionandthesuggestionaboutanconstructionofthefibers--reinforcedasphalt