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GUAN Hong-xin, ZHANG Qi-sen, LIU Jing. Rutting test improving methods of asphalt mixture[J]. Journal of Traffic and Transportation Engineering, 2011, 11(3): 16-21. doi: 10.19818/j.cnki.1671-1637.2011.03.004
Citation: GUAN Hong-xin, ZHANG Qi-sen, LIU Jing. Rutting test improving methods of asphalt mixture[J]. Journal of Traffic and Transportation Engineering, 2011, 11(3): 16-21. doi: 10.19818/j.cnki.1671-1637.2011.03.004
shu

Rutting test improving methods of asphalt mixture

doi: 10.19818/j.cnki.1671-1637.2011.03.004
  • 1.

    School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, Hunan, China

  • 2.

    Key Laboratory of Highway Engineering of Ministry of Education, Changsha University of Science and Technology, Changsha 410004, Hunan, China

  • 3.

    Key Laboratory of Road Structure and Material of Ministry of Transport, Changsha University of Science and Technology, Changsha 410004, Hunan, China

More Information
  • Author Bio:

    GUAN Hong-xin(1974-), male, associate professor, PhD, +86-731-85258379, guanhxin@sina.com

  • Received Date: 2011-01-12
  • Publish Date: 2011-06-25
    Abstract
  • The difference between laboratory rutting test conditions and actual pavements was analyzed. Rutting test improving methods were proposed, which included reducing loading speed under heavy loading condition, developing full-thickness rutting tests as conventional rutting tests' complement, forming thermal gradient in full-thickness rutting samples. Rutting tester was improved, and the testing duration times at different loading speeds and the dynamic stability calculating methods were confirmed. Rutting tests were carried out by using improving rutting tester under different conditions. These tests included asphalt mixture's rutting tests under heavy loading and low speed, full-thickness rutting tests under uniform temperature field and under thermal gradient. The anti-rutting performance evaluation method of asphalt mixture was proposed based on the improving methods. Test result shows that dynamic stability of asphalt mixture reduces by 50%-70% when loading speed decreases by 2/3, and the dynamic stability of full-thickness sample is 20%-50% lower than that of surface course asphalt mixture. These can fully explain the rutting disease of asphalt pavement at upgrade section, and the improving methods are feasible.

     

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    • References(14)
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