USE OF MIXED WASTE RECYCLED PLASTIC AND GLASS AS AN AGGREGATE REPLACEMENT IN ASPHALT MIXTURE

Abstract

Transportation infrastructure plays a key role in the everyday life of social beings. Since it requires very high quantities of construction material, any small percentage reduction in percentages in materials and replacement with alternate material makes greater impact. In this regard many countries have started research on replacing aggregate with Glass and Plastic in small percentages. Notable work is done in India (Jamshedpur), plastic is inculcated in bitumen for road construction. Same has been notices in Indonesia (Bali, Bekasi, Makassar, Solo and Tangerang), hence the plastic- Asphalt mixture is more common there. The use of Plastic not only conserve resources, but also reduce huge amount of Ocean pollution Pakistan is facing now a days. Same is the case with Glass which occupies large landfills and causes soil changes to soil in addition to cussing land pollution for decades to some. New York has conducted the greatest project in this regard where 225,000metric tons of Glass had been used in surface coarse. Their use is mainly applied to combat the growing Plastic and Glass waste which is causing great environment and Ocean Pollution. Plastic and Glass is produced at much higher pace then utilized or curbed to save the environment, hence their use in roads provide a viable option to mitigate their enormous amounts. Furthermore, possible advantages of using the waste products would is the reduced amount of required bitumen in the mix as PET (Plastic bottle) researched concluded. The replacement of our aggregate resources and reduction in the amount of Bitumen would produce a cost-effective mix. Pavements over time gets damaged by rutting, fatigue, moisture susceptibility render it unusable for vehicles. Therefore, it is needed to have such design which are cost effective and environmentally friendly. The utilization of Waste Plastic bottles (PET) and Glass (windows, bottles) acts a distinct part in achieving national prosperity. This project is based on evaluating the performance of Hot Mix Asphalt (HMA) by using different contents of Plastic and Glass as an in place of aggregate. ix • NHA gradation B, ARL grade 60/70, RAP from Islamabad • Lahore M2 and Plastic and Glass from Timber Market dump yard of Islamabad were used in this study. Lime which is anti-stripping agent is bought from the I9 market Islamabad. • Penetration, Ductility and Temperature testing were done on virgin bitumen. • Plastic and Glass percentages of 0.5%, 1.5% and 2.5% were used. • Performance testing was done after finding out the OBC, volumetric, stability and flow of Plastic and Glass containing mixtures. Using those OBC, different samples were formed and tested for evaluation and compared with the performance testing results of mixtures containing aggregate only. • Performance testing’s included indirect tensile Fatigue Test (ITFT) and Wheel Tracking apparatus • It was noted that 1.5% Plastic and 1.5% Glass as a replacement of bitumen can be • Used which would give better properties than control mix of virgin materials. Cost • Estimation was also done which showed 3% reduction in cost.