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1、Abstract:Inordertoinvestigatetheeffecthighandlowtemperatureperformanceofdifferentkindsofasphaltincludingcompositemodifiedasphalt(CCR),rubberpowdermodifiedasphalt(CR)andSBSmodifiedasphalt(SBS),usingdynamicshearrheometer(DSR)andbendingbeamrheometer(BBR)respectivelyforthreekin
2、dsofasphaltas-is,rotatingthinfilmovenaging(RTFOT)andpressureafteraging(PAV)asphaltspecimentotemperatureandfrequencyscanningtestandbendingbeamrheologicaltest.Basedonanalysisthe rheologicalparametersof storagemodulus(G'),lossmodulus(G''),compositemodulus(G*) ,phaseangle(δ),ru
3、ttingfactor(G*/sin)andCreepstiffnessmodulusofSandCreeprateofm,toevaluatethehighandlowtemperatureperformanceofthepolymermodifiedasphaltbeforeandafteraging.Resultsshowthat:DSRtestandBBRtestcancomprehensiveevaluationthechangecharacteristicsofmodifiedasphaltperformance;Theaging
4、doesnotaffectthechangetrendofrheologicalparameter;Forthehightemperatureperformance,thevaluesoftheparametersafteragingasawholeissmallerthanbeforeaging,showthatthehightemperaturedeformationresistanceabilityofafteragingisimprovedthanbeforeaging;Forthelowtemperatureperformance,
5、thevaluesofSandmhavegreatinfluenceafteraging,Sisincreasedandmisreducedafteraging,indicatesthatthelowtemperaturecrackresistanceofasphaltisreducedandeasytocrack.Andcomparedwiththetemperature,theinfluenceoftemperatureontheSandmisgreatthantheaging.Keywords:polymermodifiedasphal
6、t;aging;hightemperatureperformance;lowtemperatureperformancetemperature;rheologicalparametersAbstract:Inordertoinvestigatetheeffectofshort-termaging(filmovenaging)andtemperatureonanti-deformationofdifferentkindsofasphaltincludingSBSmodifiedasphalt(SMA),rubberpowdermodifieda
7、sphalt(RPMA)andcompositemodifiedasphalt(CMA),repeatcreeprecoverytestwasconductedbythedynamicshearrheometer(DSR),theanti-deformationindex-HL（calculatedbycomplexshearmodulus-G*）andviscouspartofcomplexshearmodulus-GVwasusedtoevaluatetheanti-deformationofthesekindsofasphaltresp
8、ectively.Inaddition,scanningelectronmicroscope(SEM)wasusedtoobservethemicrostructu
