Performance Classification of Asphalt Binder Reinforced with Waste Polycarbonate Particles for Sustainable Pavement Applications

O. I. Salman and B. I. O. Dahunsi
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O. I. Salman: Department of Civil Engineering, Faculty of Technology, University of Ibadan, Nigeria
B. I. O. Dahunsi: Department of Civil Engineering, Faculty of Technology, University of Ibadan, Nigeria

International Journal of Research and Scientific Innovation, 2025, vol. 12, issue 7, 1947-1955

Abstract: The use of polymers to modify asphalt binders has become increasingly popular as a way to enhance the longevity and sustainability of road pavements. This research examines how adding waste polycarbonate (PC) particles affects the performance grading of asphalt binder, focusing on its ability to improve mechanical and rheological properties for road applications. Waste polycarbonate, recognized for its toughness and heat resistance, was mixed into the asphalt binder at different concentrations to study its impact on critical performance measures such as penetration deepness, softening point, ductility and viscousity; to analyze the distribution and bonding of polycarbonate within the asphalt matrix. Findings reveal that polycarbonate modification boosts the binder’s heat resistance, stiffness, and elasticity, leading to better resistance to rutting and enhanced durability in high-temperature environments. However, too much polycarbonate increased stiffness, which could reduce flexibility in cold conditions. The study identifies an optimal polycarbonate content to balance high-temperature steadiness with low-temperature crack endurance and resistance. These results highlight the potential of waste polycarbonate materials as eco-friendly asphalt modifiers, supporting circular economy practices and the creation of advanced pavement materials.

Date: 2025
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