华南理工大学学报(自然科学版) ›› 2008, Vol. 36 ›› Issue (10): 76-80,91.

• 交通运输工程 • 上一篇    下一篇

基于动态模量主曲线的沥青混合料连续松弛时间谱

迟凤霞 张肖宁 邹桂莲   

  1. 华南理工大学 道路工程研究所, 广东 广州 510640
  • 收稿日期:2007-11-12 修回日期:2008-03-09 出版日期:2008-10-25 发布日期:2008-10-25
  • 通信作者: 迟凤霞(1979-),女,博士生,主要从事道路路面研究. E-mail:chifengxia@126.com
  • 作者简介:迟凤霞(1979-),女,博士生,主要从事道路路面研究.
  • 基金资助:

    国家自然科学基金资助项目(50278037)

Continuous Relaxation Time Spectrum of Asphalt Mixture Based on Master Curve of Dynamic Modulus

Chi Feng-xia  Zhang Xiao-ning  Zou Gui-lian     

  1. Research Institute of Road Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-11-12 Revised:2008-03-09 Online:2008-10-25 Published:2008-10-25
  • Contact: 迟凤霞(1979-),女,博士生,主要从事道路路面研究. E-mail:chifengxia@126.com
  • About author:迟凤霞(1979-),女,博士生,主要从事道路路面研究.
  • Supported by:

    国家自然科学基金资助项目(50278037)

摘要: 通过动态剪切流变试验,结合时温换算法则得到沥青混合料全温全频域内的主曲线;应用相关的计算方法,获得连续松弛时间谱的解析表达式,并研究松弛时间谱在沥青混合料性能研究方面的应用.结果表明,动态剪切流变试验能够有效获得连续松弛时间谱,连续松弛时间谱能够为沥青混合料的工程性能研究提供有利手段.

关键词: 沥青混合料, 连续松弛时间谱, 主曲线, 动态模量, 全温全频域

Abstract:

Dynamic shear rheological tests were carried out and the time-temperature shift principle was adopted to obtain the master curve of asphalt mixture in the whole-temperature whole-frequency range. Then, some correlative calculations were performed to deduce the analytical expression of the continuous relaxation time spectrum. Moreover, the applications of the relaxation time spectrum to the investigation of asphalt mixture performance were discussed. The results indicate that the dynamic shear rheological test helps to obtain the continuous relaxation time spectrum suitable for the research on the pavement performance of asphalt mixture.

Key words: asphalt mixture, continuous relaxation time spectrum, master curve, dynamic modulus, whole-temperature whole-frequency range