Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (10): 81-85.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Performance of Reflection Crack Resistance of Stress-Absorbing Waterproof Interlayer

Xue Zhong-jun 1.2  Wang Jia-ni2  Tan Yi-qiu1   

  1.  1. School of Communications Science and Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China; 2. Beijing Municpal Roadway Administration Bureau, Beijing 100053, China
  • Received:2007-12-03 Revised:2008-05-03 Online:2008-10-25 Published:2008-10-25
  • Contact: 薛忠军（1974-），男，博士，主要从事道路管理养护检测及道路材料研究． E-mail:xuezhongjun@126．com
  • About author:薛忠军（1974-），男，博士，主要从事道路管理养护检测及道路材料研究．
  • Supported by:

    国家自然科学基金资助项目（50808058）;教育部2006年新世纪优秀人才支持计划项目（2006348）;“十一五”国家科技支撑计划重点资助项目（2006BAJ18B05）

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Abstract:

In order to evaluate the reflection crack resistance of stress-absorbing waterproof interlayer （ SAWI）, some performance tests were carried out. The results obtained with an improved asphalt pavement analyzer （APA） show that the fatigue life of SAWI is 3.32 times that of the common asphalt concrete. The pull-out test results obtained with a modified material test system （MTS） indicate that SAWI is of good interlayer bonding capability. Moreover, as compared with the control sample, SAWI is of strong preflection crack resistance. It is thus concluded that SAWI can effectively delay the cracking of asphalt pavement due to its low modulus, high toughness and elasticity, as well as good seepage-preventing capability.

Key words: road engineering, asphalt overlay, reflection crack, stress-absorbing waterproof interlayer, high-elasticity modified asphalt