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Research on Fatigue Characteristics and Prediction of Large-Particle Asphalt Mixtures Based on Four-Point Bending Tests

Author

Listed:
  • Li Wei

    (College of Architecture and Civil Engineering, Nanning University, Nanning 541699, China)

  • Jinlong Lv

    (School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

  • Hongliu Rong

    (School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

  • Xiaolong Yang

    (School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

Abstract

Large aggregate asphalt mixtures can absorb noise, reduce water damage, effectively improve the service life of roads, and reduce environmental pressure. In this study, the fatigue characteristics of a large-sized asphalt mixture, LSAM-30, were investigated using four-point bending tests. The fatigue performance of LSAM-30 was compared to that of AC-13 and AC-20 asphalt mixtures across a range of temperatures, frequencies, and strains. The results indicated that the temperature, frequency, and strain significantly affect the fatigue performance of LSAM-30. As the temperature or frequency increased, the disparity in the fatigue performances of LSAM-30, AC-13, and AC-20 became more pronounced. Furthermore, the variations in the strain did not exhibit a clear pattern in the fatigue performance ratio among the three asphalt mixtures, with the ratio changes being minor (<5%). Additionally, an exponential-function-based predictive equation was proposed, showing how the fatigue characteristics of LSAM-30 vary with changes in frequency and temperature.

Suggested Citation

  • Li Wei & Jinlong Lv & Hongliu Rong & Xiaolong Yang, 2024. "Research on Fatigue Characteristics and Prediction of Large-Particle Asphalt Mixtures Based on Four-Point Bending Tests," Sustainability, MDPI, vol. 16(11), pages 1-21, June.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:11:p:4844-:d:1409652
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    References listed on IDEAS

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    1. Paranavithana, Sumeda & Mohajerani, Abbas, 2006. "Effects of recycled concrete aggregates on properties of asphalt concrete," Resources, Conservation & Recycling, Elsevier, vol. 48(1), pages 1-12.
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