Reduction in vehicle fuel consumption is one of the main benefits considered in technical and economic evaluations of road improvements. The study described in this paper investigated the increase in vehicle energy consumption caused by the structural response of a concrete pavement to a moving load. First, the day and night falling weight deflectometer deflection time histories were measured for three concrete sections; their mechanical characteristics were then backcalculated. Second, a finite element model (DYNASLAB) was used to determine the pavement structural response under moving load for all three sections under different wheel loading conditions (passenger car, SUV, and articulated truck), vehicle speeds, and temperatures. As the rolling wheels move forward, the local deflection basin caused by the delayed deformation of the subgrade and the rotation of the slab form a positive slope. The energy dissipated was calculated as the energy required for a rolling wheel to move uphill. Finally, the calorific values of gasoline and diesel were used to convert energy into fuel consumption excess. The maximum deflection-induced energy consumption is about 0.08% of the total consumption for articulated trucks, which is small compared with 1.9% for asphalt pavements at high temperatures and low speeds, as reported by other studies.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Impact of Concrete Pavement Structural Response on Rolling Resistance and Vehicle Fuel Economy


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2017-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    VEHICLE FUEL ECONOMY BY OPTIMIZING EFFECTIVE TIRE ROLLING RESISTANCE

    CLAYTON WILLIAM BENNETT / BRADLEY CALVIN RHETT | European Patent Office | 2017

    Free access

    Vehicle fuel economy by optimizing effective rolling tire resistance

    CLAYTON WILLIAM BENNETT / BRADLEY CALVIN RHETT | European Patent Office | 2016

    Free access

    Vehicle fuel economy by optimizing effective tire rolling resistance

    CLAYTON WILLIAM BENNETT / BRADLEY CALVIN RHETT | European Patent Office | 2019

    Free access

    IMPROVEMENT OF VEHICLE FUEL ECONOMY BY OPTIMIZING EFFECTIVE TIRE ROLLING RESISTANCE

    CLAYTON WILLIAM BENNETT / BRADLEY CALVIN RHETT | European Patent Office | 2015

    Free access