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《復(fù)配改性瀝青性能的研究》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、1094867分類號?～tJ4J．曼：．翻王??密級??．．公開?UDC編號學(xué)位論文THESISFORDEGREE復(fù)配改性瀝青性能的研究作者?胨?蠢?申請學(xué)位級別??題土?～專業(yè)名稱??材料掌??邏I寧I工程技芥螂LIAONINGTECHNICALUNⅣERSITY遼寧工程技術(shù)大學(xué)堡主堂焦笙莖!!．_-———-_—-———_————————_———————_———-—-———__——————-—_——_———————_———●_—_———————●———————————————一一一ABSTRACTAsphaltisageneralelectionmaterialinth
2、eroadsurfaceproject，actmgasaviscoelasticmaterial．However，asiteasilybecomesbrittleatlowtemperatureandsoftathightemperature，theapplicationtemperaturerangeISnarrow,theprematuredestructionalphenomenonontheasphaltpavementtakesplaceeverandagain，SOtheresearchonthemodifiedasphaltmaterialisimperat
3、iveunderthesituation．Alotofresearchprovedthattheutilizationofpolymermodifiedasphaltisanefficientapproachtosolvethisproblem．SBSmodifiedasphalthasplayedanimportantroleintherapiddevelopmentofhighway,withitsexcellentproperties．However，SBSmodifiedasphaltispronetobeingunstableduringhotstoragewh
4、ichpresentanobstacletoitsdevelopment．Thisarticlebasesontheinternalandextrernalstudies，aimingattheprematuredestruetionalphenomenonofasphaltpavementinHebeiprovince，asphaltwasmodifiedbyutilizingSBS，theconventionalpropertiesandstoragestabilityvariablelawofSBSmodifiedasphalt．Andinallusiontothe
5、characteristicofbadstoragestabilityofSBSmodifiedasphalt，inordertodecreasethedensitydifferencesandincreasetheconsistencybetweenSBSandasphalt，thebuiltmodifiedasphaltwereobtainedbyaddingthesilicahydratedandmetallicsoapintoSBSmodifiedasphalt，theoptimalcontentcanbedeterminedandtheSBSmodifiedas
6、phaltwithhigh—temperaturestoragestabilitvcanbegained，butthepreconditionisthattheoriginalperformanceishardlyefIfected．Themicrostructureofmodifiedasphaltwasanalyzedbyfluorescencemicroscope．TheresultsshowedthattheSBSmodifiedasphalthadthepropertiesofhigh—temperaturebehavior，low．temperatureper
7、formance，andsensitivityfortemperature，butthestoragestabilitywasnotwell；thestoragestability，high—temperaturebehaviorandsensitivityfortemperatureofSBSmodifiedasphaltwereimprovedbvsilicahydratedandmetallicsoapinadifferentdegree，theimprovedeffectonitsstoragestabilitybym
