INVESTIGATION OF PHYSICAL AND CHEMICAL PROPERTIES OF BITUMEN MODIFIED WITH WASTE ENGINE AND INDUSTRIAL OILS

The modification of bitumen with waste oils encourages the transition5 to sustainable production and consumption strategies by increasing resource efficiency and reducing environmental impacts. In this study, bitumen was modified with waste engine oil (WEO) and waste industrial oil (WIO) at the rate of 2%, 2.5%, 3%, 3.5%, and 4% by weight to increase resource efficiency and contribute to sustainable transportation. Physical tests (penetration, softening point, penetration index, rotational viscometer) were applied to the oil modified bitumens, and the chemical composition of the bitumen as a result of the modification was examined using FTIR, SEM, and EDS analyses. Results indicate that modified bitumens exhibit superior performance in cold climate regions. The modification of 4% WIO and WEO into bitumen reduced the mixing temperature by 3.5% and 5%, respectively, and the compaction temperature by 5% and 10%, respectively. The findings of the study indicate that WIO and WEO can be used in bitumen modification to improve its performance. This study contributes to sustainable production practices by not only utilizing waste materials in a sustainable manner but also reducing the environmental impacts of industrial processes.