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JI Jie, SHI Yue-feng, SUO Zhi, YAO Hui, XU Shi-fa. Influence of direct coal liquefaction residue on viscoelastic properties of asphalt mortar[J]. Journal of Traffic and Transportation Engineering, 2015, 15(4): 1-8. doi: 10.19818/j.cnki.1671-1637.2015.04.001
Citation: JI Jie, SHI Yue-feng, SUO Zhi, YAO Hui, XU Shi-fa. Influence of direct coal liquefaction residue on viscoelastic properties of asphalt mortar[J]. Journal of Traffic and Transportation Engineering, 2015, 15(4): 1-8. doi: 10.19818/j.cnki.1671-1637.2015.04.001
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Influence of direct coal liquefaction residue on viscoelastic properties of asphalt mortar

doi: 10.19818/j.cnki.1671-1637.2015.04.001
  • 1.

    School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

  • 2.

    Beijing Urban Transportation Infrastructure Engineering Technology Research Center, Beijing 100044, China

  • 3.

    Department of Civil and Environmental Engineering, Michigan Technological University, Houghton 49931, Michigan, USA

  • 4.

    Beijing Collaborative Innovation Center for Metropolitan Transportation, Beijing 100044, China

More Information
  • Author Bio:

    JI Jie(1972-), female, professor, PhD, +86-10-68322100, jijie@bucea.edu.cn

  • Received Date: 2015-01-02
  • Publish Date: 2015-08-25
    Abstract
  • SK-90 was taken as base asphalt, filler-asphalt ratio was 1.0, the direct coal liquefaction residue(DCLR)modified asphalt mortars with the DCLR contents as 5%, 10%, 15%, 20% and SK-90 asphalt mortar were produced respectively.The influences of DCLR on asphalt mortar rut factor, fatigue factor, creep stiffness modulus and creep rate were compared by dynamic shear rheometer(DSR)and bending beam rheometer(BBR)tests.The influence rule of DCLR on the viscoelastic properties of asphalt mortar was analyzed.Test result indicates that DCLR can significantly improve the high-temperature properties of asphalt mortar, reduce its lowtemperature and fatigue properties.DCLR also increases the elastic properties of asphalt mortar at high temperature and the viscous properties at low temperature.The high-temperature, lowtemperature and fatigue properties of asphalt mortar with high DCLR content are very sensitive to temperature.With the increase of DCLR content, the application scopes of asphalt and asphaltmortar become more and more narrow.Therefore, in the view of application, the content of DCLR is recommended to be less than 10%, and the asphalt and asphalt mortar can be applied for middle surface layer of asphalt pavement.

     

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    • References(23)
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