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1、LownoiseasphaltpavementKeywords:lownoise;Asphaltpavement;Mix;MixdesignAbstract:Inordertostudylownoiseasphaltpavementmixturegradationdesignmethod,usingtheaggregategradationdesignandoptimumasphaltcontentaslownoiseasphaltpavementmixdesigntwomajordesignindex,adoptthetokenmethod
2、todetermineaggregategradationdesign,bythemeansofthetheoreticalcalculation,flowtestandasphaltdroptestanalysis,todeterminetheasphalt.Thebestmixtureasphaltcontent.Theresultsshowthatthetokenmethodgetmixturevoidsandtargetvoidratiohasagoodlinearcorrelation,theflowtestmethodtodete
3、rminetheoptimumasphaltcontentofasphaltmixture,moreaccordswiththepracticeofengineeringandeasytogeneralize.Lownoiseasphaltmixtureduetodifferentfromordinaryasphaltmixture,socan'tuseordinaryasphaltmixturedesignmethodtostudy.Asphaltmixdesign,includingaggregategradationdesignando
4、ptimumasphaltcontentdeterminetwocontent,andInChinathereisnomatureexperience.Thedesignmethod,itisthestudyofthemainproblemsneedtobesolved.Introduction:Inrecenttenyears,thankstothegovernmentincreasedthetransportationinfrastructureconstructionforceandactiveinvestmentpolicy,Chin
5、a'srapiddevelopmentofhighwayconstruction,especiallythemainnationalhighwayconstructionhasmadegreatprogress,roadnetworkisthetotalsizeandoveralltechnicallevelhaveincreasedgreatly.Bytheendof2000,thenationalhighwaymileageunderstanding167.kilometers,ofwhichgradehighway131.kilomet
6、ers,Thenationalroadnetworkdensityupto17.5km/hundredsquarekilometers.Therapiddevelopmentofhighwayconstruction,increasetransportcapacity,promoteregionaleconomicrapiddevelopmentspeed,butalsotothesurroundingenvironmentcausedbyacertaindegreeofpollutiondamage,trafficnoiseisoneoft
7、hemajorpollution.Trafficnoiseasakindofnoisepollution,theresidentsoftheinterferenceinmanycountrieshasmorethanotherformsofnoisepollution.InFrance,80%ofthosesurveyedthinknoisepollutionindailylifethebiggestcauseofinterference,halfofwhichpeoplethinkthattrafficnoiseisthemainnoise
8、source.Similarly,inBeijingasurveyalsoshowedthatthetrafficnoisepollutioncomplaintsa
