The Effect of Liquid Products Obtained From Pyrolysis of Different Plastic Wastes on The Performance Properties of Warm Mix Asphalts

Abstract

Warm mix asphalt (WMA) is a new technology that allows the production and placement of the asphalt mixes at lower temperatures than the traditional hot mix asphalt (HMA). Compared with HMA, the main technical advantages of WMA are as follows: Lower energy consumption in mix production, reduced emissions, longer hauling distances and better working conditions. In this study, it has been investigated whether the liquid products obtained pyrolysis of the different plastic wastes (Polyethylene and polypropylene) can be used as an additive material in WMA. In this process, the waste plastics were pyrolized and then the liquid products obtain from pyrolysis were modified with bitumen. The physical and rheological properties of the virgin and modified bitumen samples were investigated by using penetration, softening point and rotational viscometer (RV) tests. As a result of the study, it was seen that the obtained additive material softened the bitumen and decreased its viscosity. Based on the results, it is foreseen that this additive material has the potential to be a WMA additive.