Abstract
Many areas in the Southern region in Buton Island, Indonesia possess immense sources of solid bitumen (high hydrocarbon substances). The compounds of Buton rock asphalt (BRA) are approximately 30% bitumen and 70% mineral. Although several products of BRA in granular form have been used in asphalt mixture production but due to the limited information of BRA products those have yet to be tapped for widely usage. In recent decades several BRA companies have been successfully extracted the bitumen from the rock asphalt. Bitumen of BRA has similar properties with the petroleum asphalt, therefore, it can be blended with petroleum bitumen to produce modified Buton asphalt (MBA). In this study Polyethylene Therephthalate (PET) and Buton modified asphalt (BMA) was used to produce porous asphalt mixture. The compacted porous asphalt specimens were subjected to Marshall stability-flow test, indirect tensile strength and horizontal strain in order to evaluate its performance. The experimental results indicated that the PET and BMA based porous asphalt mixture with proper binder formulation can provide desired performance.
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