Dynamic Modulus Master Curve Construction Using Christensen-Anderson-Marasteanu (CAM) model
Journal Title: International Journal of engineering Research and Applications - Year 2017, Vol 7, Issue 1
Abstract
Dynamic modulus is a fundamental property used in most mechanistic analysis of pavement response as well as material input for design of flexible pavement. Correspondingly, the E* of HMA master curve incorporated time and temperature effects. The aim of this study is to obtain dynamic modulus and phase angle data using the Christensen-Anderson-Marasteanu (CAM) model based on master curve. Samples were prepared according to the AASHTO TP 62-03 Standard Test Method for Determining Dynamic Modulus of Hot-Mix Asphalt Concrete Mixtures. The results show that the dynamic modulus is decreasing with increase of temperature for all mixtures while it is opposite trend with the phase angle. In terms of resistance of rutting, the JAPAN AC-20 is a good potential mix at frequency of 25 and 10 Hz while USA and JAPAN AC-13 mixes are good for fatigue resistance at same frequency respectively. From the Goodness-of-fit statistics, all the mixture gave an excellent correlation when R^2≥0.90 and Se/Sy ≤0.35. Nonetheless, the correlation coefficient R^2 is not always a reliable coefficient to measure the Goodness-of-fit for nonlinear regression analysis. Furthermore, they may have local or overall biases in the predictions that can reduce significantly its accuracy under certain conditions.
Authors and Affiliations
Bouraima Mouhamed Bayane, Enhui Yang, Qiu Yanjun
Keywords
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- EP ID EP389928
- DOI 10.9790/9622-0701055363.
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