PERFORMANCE OF POROUS ASPHALT CONTAINING MODIFICATED BUTON ASPHALT AND PLASTIC WASTE

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.