Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (10): 76-80,91.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

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）

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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