SAC纤维沥青混凝土路用性能研究

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1、山东大学硕士学位论文SAC纤维沥青混凝土路用性能研究姓名：傅吉民申请学位级别：硕士专业：道路与铁道工程指导教师：刘树堂20070518山东大学硕士学位论文ABSTRACTSACisakindofgoodperfo蚰anceasphaltconcrete．whichWasdevelopedbyourcountryin1988，andhasgotverygoodeconomicbenefitinlotsofengineeringapplications．Inrecentyears，along诵tllthedevelopmentofeconomy,thepavementperformance

2、ofunmodifiedSACasphaltconoroteCannotsatisfythedevelopmentof仃a伍candvehicleload．Sothepavementperformanceofasphaltmixtureneedstobeimprovedurgentlybyanykindofadvancedtechnology．Amongthesetechnologies,fiberreinforcingispaidmoreattentionduetoitsinexpensiveandgoodperformance．Alotofresearcheshavebeendon

3、eonfiberreinforcedasphaltmixture，andalsoachievedmanyusefulresults，buttheresearchonpavementperformanceoffiberreinforcedSACasphaltmixture，especiallysystemicresearchonlongpolymerfiber,isseldomperformed．ThispaperresearchsthepavementperformanceofSACasphaltmixturereirfforcedby19mmlongofFORTA@ARand6mml

4、ongTOPROADIIpolymerfiber．First,itanalyzestheresearchschemeoffiberreinforcedSACasphaltmixturobased011previousstudies；second,itdesignsthestone-to-stonecontactstructureSACasphaltmixtureusingmodifiedCAVFdesignmethod；Finally,itanalyzesthepavementperformanceoffiberreinforcedSACasphaltmixturebyaserieso

5、ftests，andanalyzesthemechanismoffiberreinforcebyviscoelasticmechanicsandcompositcmechanics．Theresearchindicatedthat,botllkindsofpolymerfibercanimprovethepavementperformanceoffiberreinforcedSACasphaltmixtureeffectively．WhenFORTA@ARdosageis0．045％anditsoptimumasphaltcontentis0．1％higherthanthepureas

6、phaltmixture,whileTOPROADIIdosageisO．227％anditsoptimumasphaltcontentisO．3％highorthanthepureasphaltmixture．thereinforcingeffectofthemissimilar．Generally,theeffectoftheFORTA@ARisbetterthanthatoftheTOPROADII，butthedispersibilityofFORTA@ARintheasphaltmixtureislower；,theTOPROAD11needsmoreasphaltandco

7、mpactenergytoensul屯highdensity．Ⅱ山东大学硕士学位论文Comparedwiththeasphaltmixturewithoutfiber,thematerialpropertiesofthefiberreinforcedasphaltnlixture,includingviscosity,modulus，toughness,creepstrengthandfatiguelife,areimproved．Keywor