复配改性沥青性能的研究

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1、1094867分类号⋯～tJ4J．曼：．翻王⋯⋯密级⋯⋯．．公开⋯UDC编号学位论文THESISFORDEGREE复配改性沥青性能的研究作者⋯胨⋯蠢⋯申请学位级别⋯⋯题土⋯～专业名称⋯⋯材料掌⋯⋯逻I宁I工程技芥螂LIAONINGTECHNICALUNⅣERSITY辽宁工程技术大学堡主堂焦笙茎!!．_-———-_—-———_————————_———————_———-—-———__——————-—_——_———————_———●_—_———————●———————————————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