Improvement Of Road Pavement Infrastructure By Using Polyethylen Terephthalate & Polypropylene
Waste production being individual in Malaysia is estimated 3-4.5kg/day/person and 19,000 tons of waste every day, and this is expected to reach 30,000 tons by 2020, only 3-5% of the total solid waste generated in Malaysia is being recycled. The absences of efficient management of municipal solid waste (MSW) regarding to use waste plastic material which inundated our cities and towns is growing challenge for developing countries including Malaysia. Secondly growing traffic on roads, changing environment and their impact on the road pavement resulted road failure and distress caused negative impact on economy of the country. This study examines properties of polymers waste plastic water bottles, polyethylene terephthalate (PET) and disposable plastic cups polypropylene (PP) were added to the normal bitumen penetration grade (80/100) prepared Marshall samples using AC-14 to investigate Marshall parameters of polymer modified bitumen and compare with conventional bitumen. Basic penetration, softening point, ductility and rotation viscosity test was performed and study finding shows that penetration, ductility, viscosity 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 both polymers (PET and PP) 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.
Index Terms� Waste Polymers, Polyethylene terephthalate (PET) and polypropylene (PP), Bitumen, Wet process, Marshall Stability