中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2019, Vol. 38 ›› Issue (04): 55-59.DOI: 10.3969/j.issn.1674-0696.2019.04.09

• 道路与铁道工程 • 上一篇    下一篇

水性环氧树脂改性乳化沥青高温性能试验研究

周卫峰1,2,董利伟1,宋晓燕2,杨志伟3   

  1. (1.河北工业大学 土木与交通学院,天津 300401; 2. 天津市交通科学研究院,天津 300074; 3. 天津市亨益晟泰筑路材料科技有限公司,天津 300400)
  • 收稿日期:2018-05-31 修回日期:2019-02-22 出版日期:2019-04-15 发布日期:2019-04-15
  • 作者简介:周卫峰(1971—),男,陕西韩城人,高级工程师,博士,主要从事道路材料研究。E-mail:zhouweifeng0000@126.com。 通信作者:董利伟(1992—),男,河北承德人,硕士研究生,主要从事道路材料研究。E-mail:1216846328@qq.com。

Experimental Study on High-Temperature Performance of Waterborne Epoxy Resin Modified Emulsified Asphalt

ZHOU Weifeng1,2, DONG Liwei1, SONG Xiaoyan2, YANG Zhiwei3   

  1. (1. School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, P. R. China; 2. Tianjin Research Institute of Transportation Science, Tianjin 300074, P. R. China; 3. Tianjin Hengyishengtai Road Building Materials Technology Co. Ltd., Tianjin 300400, P. R. China)
  • Received:2018-05-31 Revised:2019-02-22 Online:2019-04-15 Published:2019-04-15

摘要: 为了研究水性环氧树脂对乳化沥青高温性能的影响,制备了水性环氧树脂掺量分别为0%、5%、10%、15%的改性乳化沥青乳液;利用修 正低温蒸发法将乳液在40 ℃条件下养生11 d后裁剪成直径25 mm、高1 mm的圆柱形试件;基于动态剪切流变试验(DSR)、多应力蠕变恢复试 验(MSCR),分别测定试件在58、64、70及76℃下保温30 min后的车辙因子(G*/sinδ)、不可恢复蠕变柔量(Jnr)。研究表明:水性环氧树脂 可提高乳化沥青的高温抗永久变形能力并降低乳化沥青蠕变过程中的黏性部分,减少累积变形;在评价水性环氧树脂改性乳化沥青的高温性 能时,温度应选在58~64℃之间;为确保高温性能,水性环氧树脂的最佳掺量为10%。

关键词: 道路工程, 水性环氧树脂, 乳化沥青, 车辙因子, 动态剪切流变试验, 多应力蠕变恢复试验

Abstract: In order to explore the effect of waterborne epoxy resin on the high-temperature performance of emulsified bitumen, the modified emulsified asphalt samples with 0%, 5%, 10% and 15% waterborne epoxy resin content were prepared, and the cylindrical specimens with diameter of 25 mm and height of 1 mm were cut by modified low temperature evaporation method after incubation at 40 ℃ for 11 days. Based on the dynamic shear test (DSR) and the multiple stress creep recovery test (MSCR), the rutting factor (G*/sinδ) and the non-recoverable creep compliance(Jnr)of the specimens were measured after holding for 30 minutes at 58 ℃ , 64 ℃, 70℃ and 76 ℃, respectively. The results show that waterborne epoxy resin can improve the permanent deformation resistance of emulsified asphalt at high temperature, reduce the viscous part of the emulsified asphalt during creep process, and reduce the cumulative deformation. When evaluating the high-temperature performance of waterborne epoxy resin modified emulsified asphalt, the temperature should be selected between 58 ℃~64 ℃. To ensure the high-temperature performance, the optimum content of waterborne epoxy resin is 10%.

Key words: highway engineering, waterborne epoxy resin, emulsified asphalt, rutting factor, dynamic shear rheological test, multi-stress creep recovery test

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