Evaluation of porous hotmix asphalt performance under accelerated loading

The purpose of the study is to evaluate the performance of porous hot mix asphalt under accelerated loading. The parameters measured were stresses and deformation (rutting) occurred in the test section. To achieve the objective, a test section was constructed and tested with a loading device, simulating truck loading. Subbase and base layers were constructed using similar materials. The variable is on the surface layers, which consist of two conventional and two porous hotmix asphalt. The pavement material conforms to the Indonesian Directorate General of Highway for the conventional HMA and Australian standard for Porous HMA. The thickness of the test section was prepared to simulate the real condition of the pavement structure. The simulated load applied to the pavement test section was equivalent to the 9,600 kg, which was more than the standard 8,160 kg axle load, and applied for more than 1,500 passes. For every 100 passes, stresses and deformation were recorded. The result shows porous HMA relatively has a comparable performance when compared to the conventional one. Hence, the application of porous HMA needs to be pushed particularly in the area where rain intensity is high.