JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2012, Vol. 42 ›› Issue (3): 81-86.

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Properties of semi-flexible cold recycled asphalt mixtures using modified emulsified asphalt and cement binders

GUO Yin-tao1, 2, LIU Qing-quan2, LIU Zhen-qing3, WANG Song-gen3   

  1. 1. School of Transportation, Southeast University, Nanjing 210096, China;
    2. Research Institute of Highway Ministry of Transport, Beijing 100088, China;
    3. National Engineering Research Center of Highway Maintenance, Beijing 100029, China
  • Received:2011-10-21 Online:2012-06-20 Published:2011-10-21

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Abstract:

Dry and immersion split tests with different cement sequences were carried out, in which performances of semi-flexible recycled mixtures might be affected. The properties of mixtures were based on the compaction test method, the Marshall test method and performance evaluation. A design procedure which included original material selection, gradation design and performance evaluation was proposed. The results first indicated that semi-flexible recycled mixtures with added cement had a denser structure and good moisture stability. Also, semi-flexible recycled mixtures had good high temperature stability, moisture stability, resistance drying shrinkage and temperature shrinkage. The actual project showed that semi-flexible recycled technology had an economic and environmental significance and the application deserved promotion.

Key words: pavement maintenance engineering, semi-flexible recycled asphalt mixture, modified emulsified asphalt, pavement performanc

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