C-φ Characterization Model for Design of Asphalt Mixtures and Asphalt Pavements

    Volume 2, Issue 3 (March 2005)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 28 February 2005

    Page Count: 14


    Fwa, TF
    Professor and Associate Professor, National University of Singapore,

    Tan, SA
    Professor and Associate Professor, National University of Singapore,

    (Received 28 November 2003; accepted 23 November 2004)

    Abstract

    This paper reports the results of a research effort initiated in the early 1990s to develop a C-φ (cohesion-angle of friction) characterization model for the design of asphalt mixtures and asphalt pavements. It is demonstrated that, since the model is based on the fundamental material properties represented by C and φ, it can derive analytically other asphalt mix design parameters such as Marshall stability and flow, and indirect tensile strength. The C-φ characterization model therefore offers a useful basis for the development of a comprehensive design framework that integrates asphalt mix design with asphalt pavement structural design. To demonstrate this capability, the research developed an empirical-mechanistic rutting prediction model of asphalt pavement layer using the C-φ characterization model. In addition, the model allows stresses and strains under design loading to be computed, which can be applied as input to structural analysis for asphalt material selection and pavement thickness design.


    Paper ID: JAI12262

    DOI: 10.1520/JAI12262

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    Author
    Title C-φ Characterization Model for Design of Asphalt Mixtures and Asphalt Pavements
    Symposium Performance of Hot Mix Asphalt (HMA), including Fundamental and Empirical Procedures, 2003-12-09
    Committee D04