SBS-WCO复合再生沥青高温流变性能与微观结构研究  

Investigation on High Temperature Rheological Properties and Microstructures of SBS-WCO Recycled Asphalt

作　　者：贺文杰 叶群山[2] 张思敏 谢成 刘豪斌 HE Wen-jie;YE Qun-shan;ZHANG Si-min;XIE Cheng;LIU Hao-bin(School of Innovation and Enterpreneurship Education,Changsha Science and Technology University,Changsha 410114,China;School of Traffic and Transportation Engineering,Changsha Science and Technology University,Changsha 410114,China;Guangxi Beitou Transportation Maintenance Technology Group Co Ltd,Nanning 530201,China)

机构地区：[1]长沙理工大学卓越工程师学院,长沙410114 [2]长沙理工大学交通运输工程学院,长沙410114 [3]广西北投交通养护科技集团有限公司,南宁530201

出　　处：《建材世界》2024年第3期67-71,共5页The World of Building Materials

基　　金：国家自然科学基金(52378437);交通部重点科技项目(2020-MS1-005);湖南省大学生创新创业训练项目(S202310536068)

摘　　要：采用黏度试验、多应力重复蠕变恢复试验、傅里叶红外光谱试验和凝胶色谱实验研究了SBS(苯乙烯-丁二烯-苯乙烯嵌段共聚物)-WCO(废食用油)复合再生沥青的高温流变性能与微观结构。结果表明:SBS-WCO复合再生沥青的黏度相比老化沥青显著降低;SBS-WCO复合再生剂能有效改善老化沥青的高温流变性能;沥青复合再生过程以物理作用为主,复合再生剂能缓解沥青老化过程中轻质小分子流失,增强再生沥青的抗老化性能。Brookfield viscosity test,Multiple Stress Creep Recovery Test(MSCR)and Fourier Transform Infrared(FTIR)were conducted to investate the high temperature rheological properties and microstructures of SBS(Styrenic Block Copolymers)-WCO(Waste Cooking Oil)recycled asphalt.Test results indicated that the viscosity of recycled asphalt was decreased significantly,and the high temperature rheological properties was improved.The composite rejuvenator and aged asphalt was mixed by physical effect.The lossing of lightweight small molecules was relieved by the rejuvenator,which resulted in the enhancement of aging resistance for recycled asphalt.

关 键 词：SBS-WCO复合再生剂 流变性能 微观结构 老化沥青 

分 类 号：U414[交通运输工程—道路与铁道工程]