The Californian Department of Transportation commissioned a pilot project to evaluate the potential of the Heavy Vehicle Simulator (HVS) for conduction pavement studies. The effect of channelisation of traffic on the rutting behaviour of a continuously-graded asphalt overlay was investigated. Secondly, the cracking behaviour of a 75 mm thick continuously-graded overlay was compared with that of a 38 mm thick bitumen-rubber asphalt overlay. A laboratory evaluation of the materials was conducted by the University of California at Berkeley. The channelisation of traffic resulted in a 100% increase in the surface rut rate compared with that under normal wandering traffic. A reduction of 50% in layer thickness is justified to obtain similar resistance to cracking if conventional asphalt is replaced with bitumen-rubber asphalt.
Reference:
Rust, FC, et al.1994. Fatigue and rutting performance of conventional asphalt and bitumen-rubber asphalt under accelerated trafficking. 6th Conference on asphalt pavements for Southern Africa, October, 1994, pp 199-215
Rust, F., Harvey, J., Verhaeghe, B. M., Noakes, W., & Van Kirk, J. (1994). Fatigue and rutting performance of conventional asphalt and bitumen-rubber asphalt under accelerated trafficking. http://hdl.handle.net/10204/1718
Rust, FC, JT Harvey, Benoit MJA Verhaeghe, W Noakes, and J Van Kirk. "Fatigue and rutting performance of conventional asphalt and bitumen-rubber asphalt under accelerated trafficking." (1994): http://hdl.handle.net/10204/1718
Rust F, Harvey J, Verhaeghe BM, Noakes W, Van Kirk J, Fatigue and rutting performance of conventional asphalt and bitumen-rubber asphalt under accelerated trafficking; 1994. http://hdl.handle.net/10204/1718 .
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