Abstract
Crack is found to be a major distress that affects the performance of the epoxy asphalt pavement. An extended finite element method was proposed for investigating the fracture properties of the epoxy asphalt mixture. Firstly, the single-edge notched beam test was used to analyze the temperature effect and calculate the material parameters. Then, the mechanical responses were studied using numerical analysis. It is concluded that 5 °C can be selected as the critical temperature that affects the fracture properties, and numerical simulations indicate that crack propagation is found to significantly affect the stress state of the epoxy asphalt mixture. The maximum principal stress at the crack surface exhibits different trends at various temperatures. Numerical solution of stress intensity factor can well meet the theoretical solution, especially when the temperature is lower than 5 °C.
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Foundation item: Project(50578038) supported by the National Natural Science Foundation of China
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Qian, Zd., Hu, J. Fracture properties of epoxy asphalt mixture based on extended finite element method. J. Cent. South Univ. 19, 3335–3341 (2012). https://doi.org/10.1007/s11771-012-1412-8
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DOI: https://doi.org/10.1007/s11771-012-1412-8