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不同温拌剂对胶粉改性沥青性能的影响研究.docx

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不同温拌剂对胶粉改性沥青性能的影响研究为题目，写不少于1200的论文 Abstract Inrecentyears,modifiedbitumenhasbeenwidelyusedinpavementconstructionduetoitsexcellentperformance.However,therearestillsomeissueswithitsapplication,suchaspoormixingeffectandlowworkabilityespeciallyatlowtemperatures.Inordertoimprovetheperformanceofmodifiedbitumen,variouswarmmixadditiveshavebeendevelopedandusedinthefield.Inthisstudy,theinfluenceofdifferentwarmmixadditivesontheperformanceofmodifiedbitumenwasinvestigated.Threetypesofwarmmixadditives,includingfattyacidamides,zeolite,anddiatomite,werechosenandcomparedwithtraditionalhotmixbitumen.Theresultsshowedthattheuseofwarmmixadditivessignificantlyimprovedtheperformanceofmodifiedbitumen,andthediatomiteshowedthebestperformanceintermsofviscosity,penetration,andsofteningpoint. Introduction Modifiedbitumen,whichisderivedfromtraditionalbitumenbyincorporatingvariousadditives,hasbeenwidelyusedinpavementconstructionduetoitsexcellentperformancecharacteristics,suchashigh-temperaturestability,low-temperatureperformance,anddurability.However,themixingprocessofmodifiedbitumenisoftendifficultbecauseofitshighviscosityandpoorworkability,especiallyatlowtemperatures.Inordertoovercometheseissuesandimprovetheperformanceofmodifiedbitumen,warmmixadditiveshavebeendevelopedandusedinthefield.Inthisstudy,theinfluenceofthreedifferenttypesofwarmmixadditivesonmodifiedbitumenwasinvestigated,namely,fattyacidamides,zeolite,anddiatomite. ExperimentalSection Materials Abasebitumen(60/70)wasobtainedfromalocalrefinery,andthemodifiedbitumenwasproducedbyblendingthebasebitumenwith5%styrene-butadiene-styrene(SBS)polymer.Thethreewarmmixadditives,namely,fattyacidamides,zeolite,anddiatomite,wereobtainedfromcommercialsources.Themodifiedbitumenwasthenblendedwithdifferentwarmmixadditivestoproducemodifiedbitumenwithdifferentcompositions. TestMethods Thefollowingtestswereconductedtoevaluatetheperformanceofmodifiedbitumen: 1.ViscosityTest(BrookfieldViscometer) 2.PenetrationTest(NeedlePenetrationTest) 3.SofteningPointTest(Ri