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Fatigue Cracking Characteristics of Asphalt Pavement Structure under Aging and Moisture Damage

Author

Listed:
  • Sunglin Yang

    (Department of Highway & Transportation Research, Korea Institute of Civil Engineering and Building Technology, Goyang-Si 10223, Republic of Korea)

  • Heebeom Park

    (Department of Highway & Transportation Research, Korea Institute of Civil Engineering and Building Technology, Goyang-Si 10223, Republic of Korea)

  • Cheolmin Baek

    (Department of Highway & Transportation Research, Korea Institute of Civil Engineering and Building Technology, Goyang-Si 10223, Republic of Korea)

Abstract

Structural characteristics influence assessment of fatigue cracking behavior. In the assessment of asphalt pavements, the asphalt structure and practical conditions must be considered. This study analyzes changes in the elastic modulus of the pavement of different asphalt mixtures amid aging and moisture damage through fatigue cracking tests. A model to predict the tensile strain at the bottom of the pavement layer is developed through a structural analysis based on the material properties. The results are comparatively analyzed using the Mechanistic-Empirical Pavement Design Guide to predict the fatigue crack life. The test results indicate that moisture damage significantly influences the material properties of asphalt pavement and can accelerate pavement damage as the asphalt ages. The coefficient values of the proposed fatigue-life prediction model can be used to predict the fatigue life depending on the age of the asphalt and its moisture damage after aging. The degree of fatigue damage can be predicted by calculating the tensile strain using the regression equation and elastic modulus according to the aging and moisture damage.

Suggested Citation

  • Sunglin Yang & Heebeom Park & Cheolmin Baek, 2023. "Fatigue Cracking Characteristics of Asphalt Pavement Structure under Aging and Moisture Damage," Sustainability, MDPI, vol. 15(6), pages 1-17, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:6:p:4815-:d:1091478
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