橡胶混凝土路用性能研究

《橡胶混凝土路用性能研究》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、同济大学交通运输工程学院博士学位论文橡胶混凝土路用性能研究姓名：杨若冲申请学位级别：博士专业：道路与铁道工程指导教师：谈至明20080901AbstractABSTRACTWiththerapiddevelopmentoftheautomobileindustryinrecentdecades，amassofscrapwheeltireswereproducedanddepositedeachyear．Howtodepositthemandalleviateenvironmentpollutionshastriggeredamuchconcern．Grindingthedepositedwhe

2、eltiresintorubberparticlesandmixingitintocementconcreteinpavementengineeringWasapplied．Thistechnologycouldimprovethetoughnessandnoisereductionofcementconcrete，however,itwouldendangerconcretestrength．Inthisdissertation，theperformancecharacteristicofrubberconcreteWasstudied．Somemodifiedtechnologiestha

3、timproveperformanceofrubberizedcementconcretewereproposed，andmechanismsofperformanceenhancementwereconcluded．Consideringtheeffectofthesizeandcontentofrubberparticles，physical，mechanicalandworkabilityperformanceofrubbermortarwasstudied．Then,polymermodifiedrubbermortar,silicafumemodifiedrubbermortaran

4、drubbermortarcontainingmodifierHwereinvestigated．Effectsofthemodifiedmethodswereanalyzsed．Takingintoaccounttheeffectofthesize，contentandcuringtimeofrubberparticles，workability,density,mechanical，toughnessanddeformationperformanceofrubberconcretewerestudyed，andmodifiedeffectsofrubberconcretewereevalu

5、ated．Basedonspecialapplicationconditions，designindicatorsofrubberconcretematerialswerepresented．Finally,noise-reductionmechanismandeffectofrubbercementconcretewereinvestigated．Themainresultsinthisdissertationwereasfollows：1)Whenincorporatingintomoreandmorerubberparticlesintomatrices，thefluidityofrub

6、bermortarincreasedfirstandthendiscreased，however,density,flexuralstrengthandcompressivestrengthwentdown．Performanceofpolymermodifiedrubbermortar,silicafumemodifiedrubbermortarandrubbermortarincludingmodifierHwerebeRerthanthatofno．modifiedmortars，theeffectofpolymerWasoptimumchoiceofallrubberconcretem

7、aterials．2)Afterincorporatingpolymer,silicafumeormodifierHintorubberconcrete，IIAbstractperformanceexperimentresultshowedthatbendingstrength，compressivestrength,splitstrengthandtoughnessofmodifiedrubbe