納米碳酸鈣和橡膠粉復(fù)合改性瀝青路用性能研究.pdf

1、廣東工業(yè)大學(xué)碩士學(xué)位論文納米碳酸鈣和橡膠粉復(fù)合改性瀝青路用性能研究姓名：曾志煌申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：張榮輝20100501廣東yak大學(xué)碩士學(xué)位論文ABSTRACTAsphalthasbeenwidelyusedinhighways，airportsandconstructionareas，duetotheexistenceofitsownhightemperaturesoftening，lowtemperature

2、brittle，easyagingandothershortcomings，usingpolymermodifiedtoimproveitsperformanceInthispaper，rubberasphaltmixingcalciumcarbonate，researchitsroadperformanceandmodificationmechanismforllanomaterialsbasisforthestudyofmodifi

3、edasphaltFirstly，researchontherubbermodifiedasphaltfromtheformulaandtechnologicalaspectsr，experimentsshowthatwhentheamountofrubberpowderin15％，mixingtemperatureon155℃，theshearingtimeof35min，theperformanceofasphaltrubberop

4、timalOptimalinperformancerubberasphaltmixedwithdifferentamountofcalciumcarbonate，bycomparingeachperformanceindextodeterminetheoptimalamountofnanocalciumcarbonateandanalysiscompositemodifiedmechanism，andfinallymixingmixtu

5、reforRoadPerformance，testmodificationResearchshowsthat15％ofrubberpowdercontentofllanocalciumcarbonatemixedwithasphaltrubber，compositemodifiedthermalpropertiesandhightemperaturestabilityisimproved，penetrationductilityanda

6、dhesiondecreasedslightlyWiththiscomplexmixasphaltmixingWiththiscomplexmixtureofmodifiedasphaltmixingspecimensRoadPerformancefoundthatdynamicstabilitycanreach3140timesmm1，residualstabilitytomaintainmorethan90％Nanocalciumc

7、arbonateparticlesthatCallimprovetheintegratedasphaltpavementperformanceSimulationanalysisusingABAQUSsoftwareasthedifferentsurfacewhentheasphaltpavementstructureunderloadresponsestudyshowsthatcalciumcarbonateandllanopowde

8、rcompositerubbermodifiedasphaltpavementcomparedtoasphaltpavementofitsgrassrootsbottomofthemaximumprincipalstressandthemaximumsurfaceshearstressdecreased，indicatingthatthiscompoundfacelayerofmodifiedasphaltisbetterthanwhe