Use of Waste Plastic bottles as a modifier in Asphaltic Pavements

日期 : Sep 2015 - Jun 2016

The production and use of plastic bottles is increasing tremendously with passing time. These plastic bottles become a problem when they are disposed off as they are non biodegradable. This means that the waste plastic, when dumped, does not decompose naturally and stays in the enviornment affecting the ecological system. Burning of this waste, too, harms the enviornment as it releases harmful dioxins which are hazardous to human health. The emission of CO2 is a major concern for enviornmentalists and world community as it is a primary greenhouse gas. Pakistan, with it’s high population and no proper recycling mechanism, faces this problem of plastic bottle littering. One of the solutions to the above mentioned problem is to use waste plastic bottles as a modifier in flexible pavements. Waste plastic bottles are shredded into smaller size and wet or dry mixing with aggregate bitumen blend can be performed. This study focuses on the use of waste plastic as a modifier to enhance the induvidual properties of aggregate and bitumen and the strength and durability of bituminous mixture. Moreover, this waste plastic when effectively utilized will reduce the impact on the enviornment.