Haul road rolling resistance and pavement condition

Abstract

An understanding of haul road rolling resistance and the impact of pavement surface and structural parameters will create an opportunity for energy and cost savings within mining operations. A search of previous studies provides limited understanding of the pavement characteristics that influence rolling resistance, or have excluded consideration of pavement stiffness. An investigation has been completed to define the impact of pavement texture, roughness and deflection on the rolling resistance experienced by off-highway, rigid dump trucks which are often referred to as ‘haul trucks’ within the mining industry. To allow such analysis, rolling resistance was calculated through data-logging of wheel motor torque. Measurement of pavement properties was completed utilising terrestrial laser scanning. Pavement roughness and deflection were found to be the pavement parameters most significantly influencing rolling resistance.