Use of plastic waste in road construction: A review

Abstract

The increasing accumulation of plastic waste has become a global environmental concern, necessitating innovative approaches for waste management and sustainable construction practices. This review examines the utilization of plastic waste in road construction as a promising solution that addresses both environmental challenges and infrastructure development needs. The incorporation of plastic waste in road construction has gained significant attention due to its potential to enhance pavement properties while reducing environmental pollution. Various forms of plastic waste, including polyethylene terephthalate (PET), high-density polyethylene (HDPE), and polypropylene (PP), have been successfully integrated into different road construction applications. The paper synthesizes research findings from multiple studies conducted before 2019, highlighting the technical feasibility, environmental benefits, and economic implications of plastic waste utilization in road infrastructure.