Jeffares and Green (Pty) Ltd. Engineering and Environmental Consulting Menlo Park, Pretoria, South Africa
Geldenhuys, J.R., Jeffares and Green (Pty) Ltd. Engineering and Environmental Consulting Menlo Park, Pretoria, South Africa
This study sets out to investigate the possibility of increasing the stone size and volume in an asphalt mixture to enhance the performance of the asphalt mixture. The study will focus on the asphalt mixes for surfacings with the viewpoint to the coal haulage industry. An increase in axle loads of traffic on roads has deteriorated the image and performance of roads. This has promoted the opportunity to investigate this option and provide a possible solution to the problem. Generally the underlying layers of a pavement can cope with the increase in loads, it is when there is breakage in the surfacing that problems occur. Water washes out fines and the pavement under the crack collapse as time goes on. An improvement in the performance of asphalt surfacing to withstand an increase in axle loads will eliminate the presence of potholes on roads. © 2011 EuroJournals Publishing, Inc.