Indonesia Conference Directory

The increase of population growth in Indonesia causes an increase of traffic volume on the road. With the increase of traffic volume, it is necessary to improve the quality of road construction, especially from the pavement layer quality. On the road that have moderate traffic volume to high traffic volume, several problems in the pavement layer is often found. One way to decrease the road damage is by improving the quality of asphalt mixture, which means increasing the asphalt quality. The research design is conducted by testing the characteristic of Asphalt Pen 60/70 and also the Asphalt Pen 60/70 mixed with gilsonite additive at 4.5%, 5.5%, 6.5%, 7.5%, and 8.5% of the asphalt weight. Asphalt Pen 60/70 mixed with gilsonite additive is called as modified asphalt. Based on the testing result, it is obtained that the characteristic of modified asphalt have a better asphalt characteristic than the Asphalt Pen 60/70. The percentage of gilsonite level that still meet all the modified asphalt requirements is at the percentage of 6.5% with ductility value >140 cm, 336oC flash point, 54.5oC softening point, 1,037 gravity specific, and 41 penetrations. Besides, 7.5% and 8.5% gilsonite levels have better asphalt characteristic than Asphalt Pen 60/70.