Applicability of recycled plastic and demolition wastes as pavement base/subbase materials

This research study aims to evaluate the applicability of utilizing Polyethylene terephthalate plastic waste blends with Recycled Concrete Aggregates and Crushed Bricks as sustainable materials for road base/subbase and footpath applications. The study comprises four stages; unbound, cement-stabilization, geopolymer-stabilization and field study of concrete footpath with recycled materials. The geotechnical properties of plastic/demolition waste blends were evaluated and theoretical model parameters were developed at each laboratory stage. Moreover, the strength and durability parameters of the field footpath were evaluated. The research outcome can be used to divert significant amount of waste materials from landfills and into sustainable pavement construction.