Influence of Long-Term Oven Aging Laboratory on Tensile Strength of Porous Asphalt Containing PET Waste and Modified Natural Asphalt

Abstract

In recent years, many potential alternatives in pavement engineering related to plastic asphalts have been studied to decrease plastic waste. One promising recycling alternative is to adopt plastic waste of Polyethylene Terephthalate PET bottles in the asphalt pavement construction, including porous asphalt mixture. Modified Buton asphalt (MBA) is a bituminous material made by combining the bitumen extracted from the natural rock asphalt and petroleum bitumen. MBA was used as bituminous material to produce porous asphalt mixture without PET and PET in this study. As part of continuous research on the production of MBA-plastic waste-based asphalt mixture, this paper reported the influence of long-term aging laboratory on indirect tensile strength of porous asphalt mixture without PET waste and that containing PET waste. After long-term aging treatment completion, in terms of indirect tensile strength value, specimens with 0.5% of PET waste were higher by 1.28 times than the no PET specimens. In contrast, on average, the horizontal strain value of samples with 0.5% of PET waste was almost similar to the no PET specimens.