Experimental Investigation of Waste Tyre Rubber and Recycled Concrete Aggregate as a Pavement Material

This study explores sustainable solutions in pavement engineering by incorporating recycled concrete aggregate (RCA) and waste tyre rubber (TR). By employing industrial by-products like ground granulated blast furnace slag (S), the research enhances the binding between TR and RCA, providing an alternative pavement material. The investigations were carried out in three stages: unbound TR+RCA mixes, slag-stabilised mixes, and slag-geopolymer stabilised mixes. Results indicate improved mechanical properties and improved microstructure offering a promising alternative to traditional pavement materials. This innovative approach contributes to environmental conservation, reducing carbon footprints, and minimizing landfill usage, showcasing significant advancements in sustainable infrastructure practices.