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生物油再生剂热再生老化SBS改性沥青及混合料性能研究.docx

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生物油再生剂热再生老化SBS改性沥青及混合料性能研究 Title:PerformanceStudyofThermallyRegeneratedAgedSBSModifiedAsphaltandMixturesusingBiosolvent-basedRegenerator Abstract: Therecyclingofagedasphaltmaterialshasbeengainingsignificantattentioninrecentyearsduetoitspotentialtoreduceenvironmentalimpactandconservenaturalresources.Thisstudyfocusesontheperformanceevaluationofthermallyregeneratedagedstyrene-butadiene-styrene(SBS)modifiedasphaltandmixturesusingabiosolvent-basedregenerator.Thephysical,rheological,andmechanicalpropertiesoftheregeneratedasphaltandmixtureswereanalyzedtoassesstheeffectivenessofthisregenerationprocess. Introduction: Asphaltisacommonlyusedmaterialintheconstructionindustry,particularlyforroadpavements.However,withtime,asphaltundergoesagingduetovariousfactorssuchasexposuretoenvironmentalelements,trafficloads,andtemperaturevariations.Thisagingprocessleadstoadeteriorationintheperformanceofasphalt,resultingintheneedforrepairsandresurfacing.Traditionalmethodsforasphaltrecyclingrequirehighenergyconsumptionandoftencontributetopollution.Therefore,alternativeapproachesthataremoreenvironmentallyfriendlyandcost-effectivearebeingexplored. Methodology: Inthisstudy,agedasphaltsampleswerecollectedfromaroadthathadbeeninserviceforasignificantperiod.Thecollectedsampleswereheatedatanelevatedtemperatureandmixedwithabiosolvent-basedregenerator.Themixingprocesswascarriedouttocarefullyensureproperincorporationoftheregeneratorintotheagedasphalt.Theregeneratedasphaltsampleswerethensubjectedtovariouslaboratoryteststoevaluatetheirphysical,rheological,andmechanicalproperties. ResultsandDiscussion: Thephysicalpropertiesoftheregeneratedasphaltshowedimprovementsintermsofsofteningpoint,penetration,andductilitycomparedtotheagedasphalt.Theseresultsindicatethattheregenerationprocesseffectivelyrestorestheasphalt'soriginalconsistency. Therheologicalpropertiesoftheregeneratedasphaltwereevaluatedusingdynamicshearrheometer(DSR)tests.Theresultsshowedthattheregeneratedasphaltexhibitedimprovedhigh-temperatureruttingre