Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (2): 99-103.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Fatigue Performances of Modified Asphalts Based on Cumulative Dissipated Energy Ratio

Meng Yong-jun  Zhang Xiao-ning   

  1. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-06-09 Revised:2011-10-27 Online:2012-02-25 Published:2012-01-04
  • Contact: 孟勇军(1981-) ，男，博士，主要从事道路工程材料与结构研究． E-mail:hitmengyj@163.com
  • About author:孟勇军(1981-) ，男，博士，主要从事道路工程材料与结构研究．
  • Supported by:

    国家自然科学基金资助项目( 51038004)

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Abstract:

In this paper,the rheological properties of different modified asphalts are experimentally investigated,and the fatigue performance index based on the cumulative dissipated energy ratio ( DER) is analyzed. Then,the fatigue performances of modified asphalts with different block ratios are discussed and compared according to the DER. Moreover,according to the fatigue performances of modified asphalts,some bending fatigue tests are carried out. The results show that DER is effective in evaluating the fatigue performances of modified asphalts and can be used as a reference index of the fatigue performances of modified asphalts.

Key words: modified asphalt, cumulative dissipated energy, rheological theory, fatigue performance

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