中国塑料 ›› 2024, Vol. 38 ›› Issue (5): 100-106.DOI: 10.19491/j.issn.1001-9278.2024.05.018

• 塑料与环境 • 上一篇    下一篇

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

孙吉书1(), 彭俊博1(), 张民2, 郭艳芳3   

  1. 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
  • 收稿日期:2023-10-23 出版日期:2024-05-26 发布日期:2024-05-20
  • 通讯作者: 彭俊博(1998—),男,硕士研究生,从事道路沥青材料研究,528578478@qq.com
    E-mail:sunjishu76@qq.com;528578478@qq.com
  • 作者简介:孙吉书(1976—),男,副教授,从事道路工程材料方面的教学与科研工作,sunjishu76@qq.com
    第一联系人:地址:北京市海淀区阜成路11号《中国塑料》杂志社广告部
    邮编:100048
  • 基金资助:
    天津市交通运输科技发展计划项目(2023?36)

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

SUN Jishu1(), PENG Junbo1(), ZHANG Min2, GUO Yanfang3   

  1. 1.School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China
    2.Tianjin Highway Engineering Design and Research Institute,Tianjin 300161,China
    3.Hebei Institute of Water Resources and Electric Power,Cangzhou 061001,China
  • Received:2023-10-23 Online:2024-05-26 Published:2024-05-20
  • Contact: PENG Junbo E-mail:sunjishu76@qq.com;528578478@qq.com

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。

关键词: 道路工程, 再生沥青, 温拌剂, 二次老化, 性能损失

Abstract:

To verify the applicability of waste oil for the recovery of asphalt aging performance, a composite waste oil regeneration 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 recycled 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 deformation 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 asphalt 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.

Key words: road engineering, recycled asphalt, warm mixing agent, secondary aging, performance loss

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