The past two decades have seen great developments and application of asphalt treated open-graded mixtures as a drainage layer in pavement in the United States. Nevertheless, the previous research has also indicated weak mechanical properties of the drainage layer compared with dense-graded asphalt concrete. This study sought to quantify the stiffness of the drainage layer materials for incorporating them into a mechanistic-empirical pavement design framework. It was found in this study that both the current dynamic modulus test method and the empirical prediction model, which were developed for dense-graded asphalt concrete, may not be applicable to drainage layer mixtures with high porosity. Under this circumstance, a modified dynamic modulus test and a calibrated model to predict the dynamic modulus for drainage layer materials have been developed based on the AASHTO TP 342-11 test method and the NCHRP 1-37A model in this study.


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    Title :

    Modified dynamic modulus test and customised prediction model of asphalt-treated drainage layer materials for M-E pavement design




    Publication date :

    2016




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    56.24 Straßenbau / 56.24




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