Beyond COVID-19: Integrating Disposable Face Masks in Asphalt to Combat Plastic Waste and Improve Pavement Resilience

Single-use disposable face masks, largely proliferated by the COVID-19 pandemic, have created substantial challenges in global waste management due to their persistent accumulation. Composed predominantly of non-biodegradable polypropylene (PP), these masks significantly contribute to plastic pollution. This paper explores an innovative approach to mitigate the environmental impact of discarded face masks by repurposing them as an additive in hot mix asphalt (HMA). Through incorporating shredded face masks into HMA, this study aims to enhance asphalt pavements' mechanical performance, particularly in rutting resistance, while offering an economically viable solution. A life cycle cost analysis (LCCA) evaluates the economic feasibility of mask-modified asphalt by comparing its long-term costs to conventional pavements. Findings indicate that integrating face masks into asphalt improves pavement durability and delivers substantial long-term cost savings through reduced maintenance. This research tackles the pressing issue of plastic pollution, proposing a sustainable, cost-effective solution for road construction that contributes to circular economy goals in the infrastructure sector.