Pavement

This test was conducted to determine the relationship between wheel tracking characteristics found in a laboratory and rutting in real-world scenarios. A road trial was established in Brisbane at the Mount Coot-tha quarry. The site was chosen as it offered an opportunity to accurately assess the traffic that traversed the trial area. Five different asphalt surfacings were placed at the trial, each about 25 m in length. The surfacings used in the trial were dense grade asphalt with a nominal size of 10 mm with a class 320 bitumen, dense grade asphalt with a nominal size of 10 mm with a multi-grade bitumen, fine gap graded asphalt with a nominal size of 7 mm with a class 320 bitumen, dense grade asphalt with a nominal size of 10 mm with a class 320 bitumen and a high percentage of rounded (natural) sand, stone mastic asphalt with a nominal size of 10 mm with a multi-grade bitumen.