The California Department of Transportation (Caltrans) has two primary strategies for the overlay of flexible pavements: overlay with dense-graded asphalt concrete (DGAC) and overlay with asphalt rubber hot mix gap graded (ARHM-GG). Caltrans ARHM-GG overlays typically are designed to be about half the thickness of DGAC overlays for a given set of conditions. The results of a study using heavy vehicle simulator trafficking to evaluate the relative performance of the two strategies for typical California conditions and to analyze the distress mechanisms are presented. The study showed that the half-thickness ARHM designs used by Caltrans are reasonable and that the primary distress mechanism is reflection cracking. Continued hardening of the asphalt-bound and unbound layers was shown to occur in the overlaid pavements. Details of deflection studies are included.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Performance of Two Overlay Strategies Under Heavy Vehicle Simulator Trafficking


    Additional title:

    Transportation Research Record


    Contributors:


    Publication date :

    2001-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Performance of Dowel Bar Retrofitted Concrete Pavement Under Heavy Vehicle Simulator Loading

    Harvey, John T. / Popescu, Lorina / Ali, Abdikarim et al. | Transportation Research Record | 2003


    Pavement moduli variation under heavy aircraft trafficking

    Gopalakrishnan, K. | Online Contents | 2006


    Heavy vehicle road simulator experiments

    Mrad, Nezih / LeBlanc, Pierre A. / Tong, Xiaohua et al. | Tema Archive | 2007