东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (5): 743-747.DOI: -

• 论著 • 上一篇    下一篇

有机膨润土改性沥青的微观结构特性及DSC分析

陈晓龙;孙永升;韩跃新;田泽峰;   

  1. 东北大学资源与土木工程学院;辽宁省交通科学研究院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50874025)

Microstructure and DSC of organic bentonite modified bitumen

Chen, Xiao-Long (1); Sun, Yong-Sheng (1); Han, Yue-Xin (1); Tian, Ze-Feng (2)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; (2) Communications Research Institute of Liaoning Province, Shenyang 110015, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Chen, X.-L.
  • About author:-
  • Supported by:
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摘要： 将有机膨润土用于改性道路沥青,在有机膨润土改性沥青路用性能测试的基础上,进一步采用SEM,DSC作为微观研究手段,通过对比分析有机膨润土、SBS和SBR在沥青中分散状态的差异以及沥青在改性前后DSC图谱的变化,探讨了有机膨润土改性沥青的机理,揭示了改性机理与其改性效果之间的关系.结果表明,有机膨润土与沥青具有良好的相容性,均匀地分布于沥青中,与沥青胶团之间形成交联,调整了沥青的胶体结构及原有组分的构成比例,进而提高了沥青的宏观路用性能.

关键词: 有机膨润土, 改性沥青, 扫描电镜, 微观结构, 差示扫描量热法

Abstract: The organic bentonite was used to modify the asphalt for pavement. According to the road test results of organic bentonite modified bitumen, the SEM and DSC methods were further used to investigate the mechanism of modified bitumen by analyzing the difference of the dispersing state and DSC atlas when organic bentonite, SBS and SBR were used as modifiers in bitumen. The relationship between the mechanism and the performance was also discussed. The result showed that there had good consistency between organic bentonite and asphalt, where organic bentonite was uniformly dispersed in the asphalt and crosslinking happened, making the colloform texture and components in asphalt change. Thus the macroscopic road performance of asphalt is enhanced.

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