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Comparison of Fatigue Analysis Approaches for Two Hot Mix Asphalt Concrete (HMAC) Mixtures.
| 题名： | Comparison of Fatigue Analysis Approaches for Two Hot Mix Asphalt Concrete (HMAC) Mixtures. |
| 作者： | CHOWDHURY, A.; GLOVER, C. J.; JUNG, S. H.; LYTTON, R. L.; MARTIN, A. E.; PARK, E. S.; WALUBITA, L. F. |
| 关键词： | ASPHALT; ASPHALT CONCRETE; FATIGUE ANALYSIS |
| 摘要： | Over the past decade, the Texas Department of Transportation (TxDOT) focused research efforts on improving mixture design to preclude rutting in the early life of the pavement. However, these rut resistant stiff mixtures may be susceptible to long-term fatigue cracking in the pavement structure as the binder stiffens due to oxidative aging. To address this concern, TxDOT initiated a research study with the primary goal of evaluating and recommending a HMAC mixture fatigue design and analysis system to ensure adequate mixture fatigue performance in a particular pavement structure under specific environmental and traffic loading conditions. A secondary goal of the research was to compare the fatigue resistance of commonly used TxDOT HMAC mixtures including investigating the effects of binder aging on fatigue performance. Based on the value engineering assessment including test results, statistical analysis, costs, and relative comparison of each analysis procedure, the continuum micromechanics based CMSE fatigue analysis approach was recommended for predicting HMAC mixture fatigue life. |
| 报告类型： | 科技报告 |
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