合成橡胶工业第46卷23-31.［22］AmericanAssociationofStateandHighwayTransportationOff-cials.AASHTOMP19-10Standardspecificationforperfor-mance-gradedasphaltbinderusingmultiplestresscreepreco-very（MSCR）test［S］.Washington：AmericanAssociationofStateandHighwayTransportationOffcials，2019：1-6.［23］锁利军.橡胶粉/SBS复合改性沥青胶结料的制备与性能研究［J］.功能材料，2022，53（6）：6224-6229.Rheologicalcharacteristicsandfatiguecharacteristicsofmicroalgaeoil/styrene-butadiene-styreneblockcopolymercompositeregeneratedasphaltXINGLin-lin1,CHENGuang2,ZHAOXin3,ZHANGHao3,FANHong-ying3（1.SchoolofCivilEngineeringandTransportationEngineering,YellowRiverConservancyTechnicalInstitute,Kaifeng475004,China;2.KaifengTongdaHighwayEngineeringCoLtdMechanizationBranch,Kaifeng475000,China;3.ShaanxiProvincialTransportPlanningDesignandResearchInstituteCoLtd,Xian710065,China）Abstract:Microalgaeoil(MO)andstyrene-buta-diene-styreneblockcopolymer(SBS)wereusedascompositeregenerantstoblendintoagedasphalttoprepareMO/SBScompositeregeneratedasphalt.Thebasicphysicalproperties,highandlowtemperaturerheologicalcharacteristicsandfatiguecharacteristicsofcompositerecycledasphaltwerecompared.TheeffectsoftheratioandamountofMOandSBSontheregenerationeffectofagedasphaltwereinvestigated.TheresultsshowedthattheviscoelasticdeformationabilityofpureMOrecycledasphaltcouldrecovertoacertainextenttothelevelbeforeaging,buttherewasstillacertaingap.Onthisbasis,MO/SBScom-positeregenerationcouldsignificantlyimprovethehigh-temperaturedeformationresistanceandelasticrecoveryperformance,anditscriticaltemperaturewas1.1~9.7℃higherthanthatbeforeaging.Atthesametime,italsoreducedthesensitivityofrecycledasphalttofatiguestraintoimprovefatigueresistance.However,thelow-temperaturecreepdeformationa-bilityofMO/SBScompositerecycledasphaltwaslowerthanthatofbaseasphalt.Whenthemassfrac-tionofMOandSBSwere8%and4%,thecompositerecycledasphalthadbetterrheologicalandfatiguecharacteristicsathighandlowtemperature.Keywords:microalgaeoil;styrene-butadiene-styreneblockcopolymer;regeneratedbitumen;rheo-logicalcharacteristics;fatiguecharacteristics;elasticrecovery国外动态··2022年日本橡胶带进出口情况据中国橡胶网3月14日报道，2022年日本橡胶带出口额总计为458.91亿日元，同比增长13%；进口额为121.77亿日元，同比增长40%。按橡胶带出口额统计，排名前10的国家和地区中，除排名第8的印度尼西亚外，其他都有所增长。特别是排名第一的美国和排名第二的中国，均大幅增长。进口额方面，在前10个国家和地区中，除排名第三的印度尼西亚与上年同期持平外，其他国家均有所增加。152··
