The resilient modulus (MR) of base course material is an important material input for pavement design. Although extensive research efforts have been directed toward MRcharacterization and modeling, less effort has been spent on factors important for cold-region pavements. Most MRvalues of granular base materials available in the database of the Alaska flexible pavement design software were obtained from in-service roadways through nondestructive testing and backcalculation. The predictive models provided in the current Mechanistic–Empirical Pavement Design Guide cannot be confidently applied to Alaska materials because of the peculiar conditions for material properties and climatic differences. Hence, a systematic study was carried out to investigate the resilient behavior of granular base materials obtained from all three regions in Alaska, as presented in this paper. Effects of temperature, freeze–thaw cycle, and moisture and fines contents on the MRof Alaska base materials were experimentally evaluated, from which equations for MRprediction were developed and compared with those based on the Long-Term Pavement Performance data.


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    Title :

    Resilient Modulus Characterization of Alaska Granular Base Materials


    Additional title:

    Transportation Research Record


    Contributors:
    Li, Lin (author) / Liu, Juanyu (author) / Zhang, Xiong (author) / Saboundjian, Stephan (author)


    Publication date :

    2011-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Measuring Resilient Modulus of Granular Materials in Flexible Pavements

    Virgil Ping, W. / Yang, Zenghai / Liu, Chunshui et al. | Transportation Research Record | 2001