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High-temperature creep behavior characterization of asphalt mixture based on micromechanical modeling and virtual test

  • Cementitious materials
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Abstract

The high-temperature creep behavior of asphalt mixture was investigated based on micromechanical modeling and virtual test by using three-dimensional discrete element method (DEM). A user-defined micromechanical model of asphalt mixture was established after analyzing the irregular shape and gradation of coarse aggregates, the viscoelastic property of asphalt mastic, and the random distribution of air voids within the asphalt mixture. Virtual uniaxial static creep test at 60 °C was conducted by using Particle Flow Code in three dimensions (PFC3D) and was validated by laboratory test. Based on virtual creep test, the micromechanical characteristics between aggregates, within asphalt mastic, and between aggregate and asphalt mastic were analyzed for the asphalt mixture. It is proved that the virtual test based on the micromechanical model can efficiently predict the creep deformation of asphalt mixture. And the high-temperature behavior of asphalt mixture was characterized from micromechanical perspective.

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Authors and Affiliations

  1. School of Transportation, Southeast University, Nan**g, 210096, China

    Tao Ma  (马涛), Yongli Zhao & **aoming Huang

  2. School of Civil Engineering and Architechture, Nan**g Institute of Technology, Nan**g, 211167, China

    Deyu Zhang

Authors
  1. Tao Ma  (马涛)
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  2. Deyu Zhang
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  3. Yongli Zhao
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  4. **aoming Huang
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Corresponding author

Correspondence to Tao Ma  (马涛).

Additional information

Funded by the National Natural Science Foundation of China (No. 51378006), the Huoyingdong Foundation of China (No. 141076), the Fundamental Research Funds for the Central Universities (No. 2242015R30027), and the Natural Science Foundation of Jiangsu Province (BK20161421 and BK20140109)

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Ma, T., Zhang, D., Zhao, Y. et al. High-temperature creep behavior characterization of asphalt mixture based on micromechanical modeling and virtual test. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 1311–1318 (2016). https://doi.org/10.1007/s11595-016-1532-3

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  • DOI: https://doi.org/10.1007/s11595-016-1532-3

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