Improvement of Asphaltic Concrete by Using Waste Polyethylen Terephthalate (PET)
This study examines properties of waste plastic water bottles, polyethylene terephthalate (PET). The waste polymer was added to the normal bitumen penetration grade (80/100) prepared Marshall Samples using ACW-14 to investigate Marshall Parameters of polymer modified bitumen and compare with conventional bitumen. Thermal analysis of PET waste polymer was carried out using TGA and DSC to study decomposition and melting temperature of the waste polymer and also select suitable type of polymer because compatibility of the material is an essential. Basic penetration, softening point, ductility test was performed and study finding shows that penetration and ductility decrease while softening point increase by addition of polymers. Marshall analysis of the study found that by addition of 9% polymers to the bitumen by weight of 5.5% at optimum level increase Marshall properties and give all positive response for polymers PET such as stability increase up to 60-70%, stiffness, flow, density and voids of the polymer modified bitumen found positively improving and enhancement was observed compared to conventional, which is the key objective of this study. In conclusion the polymers modified bitumen improves stability, workability and reduce deformation in road pavement.