华南理工大学学报(自然科学版) ›› 2010, Vol. 38 ›› Issue (3): 37-40,52.doi: 10.3969/j.issn.1000-565X.2010.03.007

• 交通与运输工程 • 上一篇    下一篇

基于动态力学分析对改性沥青粘弹性能的研究

詹小丽1,2  王端宜1   

  1. 1.华南理工大学 土木与交通学院, 广东 广州 510640; 2.浙江工业大学 建筑工程学院, 浙江 杭州 310014
  • 收稿日期:2008-10-24 修回日期:2009-03-03 出版日期:2010-03-25 发布日期:2010-03-25
  • 通信作者: 詹小丽(1982-),女,博士后,主要从事道路工程与材料研究. E-mail:zhanxl@seut.edu.cn
  • 作者简介:詹小丽(1982-),女,博士后,主要从事道路工程与材料研究.
  • 基金资助:

    国家自然科学基金资助项目(50808087)

Analysis of Viscoelastic Properties of Modified Asphalt via Dynamic Mechanical Method

Zhan Xiao-li1.2  Wang Duan-yi 1   

  1. 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China
  • Received:2008-10-24 Revised:2009-03-03 Online:2010-03-25 Published:2010-03-25
  • Contact: 詹小丽(1982-),女,博士后,主要从事道路工程与材料研究. E-mail:zhanxl@seut.edu.cn
  • About author:詹小丽(1982-),女,博士后,主要从事道路工程与材料研究.
  • Supported by:

    国家自然科学基金资助项目(50808087)

摘要: 鉴于目前的沥青粘弹性能评价指标对改性沥青的适用性较差,采用动态力学分析方法对基质沥青和改性沥青进行研究,测定了不同温度和频率下沥青的粘弹性能参数,通过Han曲线和动态粘弹参数的变化规律分析其粘弹性能,结果表明改性沥青由于其相态结构比较复杂,导致其粘弹性能不同于基质沥青,采用动态力学方法能很好的揭示改性沥青的宏观力学性能与其微观结构的相关关系。

关键词: 道路工程, 改性沥青, 动态力学分析, 粘弹性能, Han曲线

Abstract:

As the existing evaluation index of viscoelastic properties of asphalt is inapplicable to modified asphalt, the viscoelastic properties of both base asphah and modified asphalt are analyzed by using the dynamic mechanical method. In the investigation, the parameters describing the viscoelastic properties at different temperatures and fre- quencies are measured, and the variation laws of both Han curves and dynamic viscoelastic parameters are analyzed. The results indicate that the temperature dependence of Han curves of modified asphalt varies at different temperatures, that there exists a great difference in viscoelasitc properties between base asphalt and modified as- phalt due to the complex morphological structure of modified asphalt, and that the dynamic mechanical analysis is effective in revealing the relativity between the macroscopic mechanical properties and the microstructure of modified asphalt.

Key words: road engineering, modified asphalt, viscoelastic property, dynamic mechanical analysis, Han curve