A Mechanistic–Empirical Model for Top–Down Cracking of Asphalt Pavements Layers (2018) / Chapter Skim
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Pages 108-112
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109 CHAPTER 6. CONCLUSIONS AND SUGGESTED RESEARCH Summary A mechanistic-empirical top-down cracking model is developed in this project.
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110 and the aging temperature effect is determined based on the Arrhenius equation. The acceleration factor A is a measure of the laboratory accelerated aging relative to field aging.
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111 Finite Element Computation and ANN Modeling of J-Integral The J-integral is not uniformly distributed within the depth of an asphalt layer. Specifically, there is a peak value at approximately one third of the layer thickness, after which it decreases.
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112 parameter in the crack initiation model. The unaged modulus, AADTT, energy parameter and air void content are critical to predict the top-down crack initiation time.
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113 model of the crack initiation time achieved an R-squared value above 0.8. This can still be increased further by including the effect of healing of asphalt mixtures.
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