废油/树脂/己二酸二辛酯复合再生剂制备及温拌剂对沥青拌合老化保护效果评价  

Preparation of waste oil/resin/dioctyl adipate composite regenerant and evaluation of protective effect of warm mixing agent on asphalt mixing aging

作　　者：孙吉书 彭俊博 张民[2] 郭艳芳 SUN Jishu;PENG Junbo;ZHANG Min;GUO Yanfang(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Tianjin Highway Engineering Design and Research Institute,Tianjin 300161,China;Hebei Institute of Water Resources and Electric Power,Cangzhou 061001,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]天津市公路工程设计研究院,天津300161 [3]河北水利电力学院,河北沧州061001

出　　处：《中国塑料》2024年第5期100-106,共7页China Plastics

基　　金：天津市交通运输科技发展计划项目(2023⁃36)。

摘　　要：为验证废油对老化沥青性能恢复的适用性,借助响应面法使用废油、C9石油树脂、己二酸二辛酯配制了一种复合废油再生剂。为避免再生沥青拌合过程中轻质组分的挥发及老化,研究引入温拌剂降低拌合温度进而实现对再生沥青的性能保护。同时,测定了再生剂对老化沥青的再生效果以及温拌剂的保护效应。研究发现,老化沥青低温延展性不良的缺陷得到恢复,再生沥青高温抗变形能力优于基质沥青;再生沥青经温拌后,黏性成分更多,进而低温流变表现占优。再生剂有效补充了老化沥青的芳香族化合物;温拌再生沥青小分子油分物质得到了保护,二次老化中大分子物质基团的生成得到了控制。To verify the applicability of waste oil for the recovery of asphalt aging performance,a composite waste oil re⁃generation agent was prepared by means of a response surface method using waste oil,C9 petroleum resin,and dioctyl adipate as raw materials.To avoid the volatilization and aging of lightweight components during the mixing process of re⁃cycled asphalt,a warm mixing agent was introduced to reduce the mixing temperature and obtain performance protection of recycled asphalt.At the same time,the regeneration effect of the recycled agent on the aged asphalt and the protective effectiveness of the warm mixed agent were investigated.The results indicated that the defects of poor low⁃temperature ductility of aged asphalt were recovered.The recycled asphalt exhibited a better resistance to high⁃temperature deforma⁃tion than base asphalt.After warm mixing,there were more viscous components in the recycled asphalt.This resulted in superior low⁃temperature rheological performance.The regenerant supplemented the aromatic compounds of the aged as⁃phalt effectively.The small molecular oil substances in the warm mixed recycled asphalt were well protected,and the generation of large molecular matter groups during the secondary aging was controlled.

关 键 词：道路工程 再生沥青 温拌剂 二次老化 性能损失 

分 类 号：TQ321[化学工程—合成树脂塑料工业]