Analysis of Asphalt Stiffness Modulus Utilizing Electronic Waste

Rapid advancements in technology have caused a substantial increase in electronic waste (e-waste), which poses environmental hazards if not handled appropriately. This study explores how e-waste powder can serve as an additive in asphalt mixtures to enhance their rheological properties. Researchers mixed asphalt with e-waste powder in proportions of 1%, 2%, and 3%, then tested the samples utilizing a Dynamic Shear Rheometer (DSR) across three testing conditions: unaged (initial state), short-term aging through the Rolling Thin Film Oven Test (RTFOT), and long-term aging via the Pressure Aging Vessel (PAV). The results reveal that adding e-waste powder strengthens the asphalt stiffness modulus (E*), with increases of 21% to 462% depending on the e-waste content, improves resistance to deformation, and reduces fatigue cracking. Specifically, the asphalt mixed with 3% e-waste performed best, achieving a failure temperature of 81.4°C, compared to 66.5°C for conventional asphalt, indicating a 25-30% improvement in deformation resistance. RTFOT and PAV tests showed an increase in failure temperature, confirming greater deformation resistance compared to conventional asphalt. Beyond improving performance, integrating e-waste into asphalt can help minimize environmental pollution and offer a more sustainable approach to road pavement construction. However, researchers must conduct further studies to assess its long-term effects and determine its economic viability for large-scale application.