Numerical Investigation of Gradation Effects on Rutting Deformation in Asphalt Pavement

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  • YANG Xinhua
    School of Civil Engineering and Mechanics, Huazhong University of Science and Technology
  • SHANG Jin
    School of Civil Engineering and Mechanics, Huazhong University of Science and Technology
  • YIN Anyi
    School of Civil Engineering and Mechanics, Huazhong University of Science and Technology
  • YE Yong
    School of Civil Engineering and Mechanics, Huazhong University of Science and Technology
  • CHEN Chuanyao
    School of Civil Engineering and Mechanics, Huazhong University of Science and Technology

Description

Asphalt mixture is described as an elastic and viscous material. Hooke’s law and the Bailey-Norton formulation are respectively used to characterize its elastic and viscous behaviors. A numerical algorithm frame is constructed to analyze nonlinear and time dependent deformation behavior of asphalt mixture. The model parameters are determined by the uniaxial compressive creep experiments and the algorithm is validated by comparison between the numerical results and the rutting experiments. The algorithm is used to analyze rutting deformations in different types of asphalt mixture specimens under cycled wheel loads. Some preliminary studies on effects of aggregate gradation on the rutting deformation in asphalt mixture samples are conducted. Finally, some conclusions are given.

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