Volume 41, Issue 6 (November 2013)

    Nano-Mechanical Characterization of Mastic, Aggregate, and Interfacial Zone in Asphalt Composites

    (Received 22 May 2012; accepted 1 May 2013)

    Published Online: 2013

    CODEN: JTEOAD

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    Abstract

    This study used a nanoindentation technique to explore the local nanoscale mechanical properties of material phases and interfaces in an asphalt concrete composite. Regions of aggregate and mastic and their interfaces were nanoindented, and the load-displacement curves were analyzed to calculate the elastic modulus and hardness of the three phases. The interface region was found to have hardness and modulus values between those of the aggregate and the mastic. This study contributes significantly to the nanoscale characterization of asphalt concrete composites, as it provides unique measurements of mechanical properties of phases and especially the interface at a very small scale.


    Author Information:

    Khorasani, S.
    Mechanical Engineering, Texas A&M Univ., College Station, TX

    Masad, E.
    Mechanical Engineering, Texas A&M Univ. at Qatar, Education City,

    Texas A&M Transportation Institute, College Station, TX

    Civil Engineering, Texas A&M Univ., College Station, TX

    Kassem, E.
    Texas A&M Transportation Institute, College Station, TX

    Abu Al-Rub, R. K.
    Civil Engineering, Texas A&M Univ., College Station, TX


    Stock #: JTE20120178

    ISSN: 0090-3973

    DOI: 10.1520/JTE20120178

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    Author
    Title Nano-Mechanical Characterization of Mastic, Aggregate, and Interfacial Zone in Asphalt Composites
    Symposium , 0000-00-00
    Committee D04