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HE Liang, LING Tian-qing, MA Yu, MA Tao, HUANG Xiao-ming. Rheological properties of warm mix asphalt rubber in wide range of pavement temperature[J]. Journal of Traffic and Transportation Engineering, 2015, 15(1): 1-9. doi: 10.19818/j.cnki.1671-1637.2015.01.001
Citation: HE Liang, LING Tian-qing, MA Yu, MA Tao, HUANG Xiao-ming. Rheological properties of warm mix asphalt rubber in wide range of pavement temperature[J]. Journal of Traffic and Transportation Engineering, 2015, 15(1): 1-9. doi: 10.19818/j.cnki.1671-1637.2015.01.001
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Rheological properties of warm mix asphalt rubber in wide range of pavement temperature

doi: 10.19818/j.cnki.1671-1637.2015.01.001
  • 1.

    National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University

  • 2.

    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University

  • 3.

    Nottingham Transportation Engineering Centre, University of Nottingham

  • 4.

    School of Science, Chongqing Jiaotong University

  • 5.

    School of Transportation, Southeast University

More Information
  • Author Bio:

    HE Liang (1983-), male, associate professor, PhD, +86-23-62649719, heliangf1@163.com

  • Received Date: 2014-09-10
  • Publish Date: 2015-02-25
    Abstract
  • In order to research the rheological properties of warm mix asphalt rubber, the asphalt rubber meeting the technical requirements in Asphalt Rubber for Highway Engineering(JT/T 798―2011)was prepared. The optimum content of warm mix additive Sasobit was determined from the warm mix effect and the impact of Sasobit on the technical indexes of warm mix asphalt rubber by viscosity-temperature relationship test and basic technical index test. The rheological properties of Sasobit warm mix asphalt rubber were evaluated in the wide range of pavement temperature at high(60, 70 ℃), medium(25 ℃)and low(5 ℃~24 ℃)temperatures. Analysis result shows that 3% is the optimum content of Sasobit in warm mix asphalt rubber. Sasobit can improve the high-temperature stability of asphalt rubber, its rutting factor at 70 ℃ increases by 79%, but Sasobit has no significant effect on the viscosity-toughness of asphalt rubber. The fatigue performance of asphalt rubber with 3% Sasobit reduces, its fatigue factor at 25 ℃ increases by 22%, but its fatigue performance is still better than that of SBS modified asphalt. Under the temperature condition of winter warm zone in Chinese standards for the climate zoning on asphalt pavement performance, as the temperature decreases, the low-temperature performance of Sasobit warm mix asphalt rubber is gradually better than that of SBS modified asphalt, its creep stiffness at -24 ℃ is 45% of creep stiffness of SBS modified asphalt, while Sasobit dosage has no excessive effect on the low-temperature performance of asphalt rubber, and the creep stiffness of asphalt rubber at -24 ℃ increases by 10%.

     

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