03-11-2014, 10:05 AM
Abstracts: Every year, around 500 billion plastic bags are used worldwide. Over one million bags are being haphazardly disposed every minute and they are damaging our environment. Yet, precious little has been done to recycle, re-use and disposal of non-biodegradable plastic waste. Plastic bags are difficult and costly to recycle and therefore mostly end up on landfill sites where they take around 300 years to photo degrade. Bottles, containers and packing strips etc. is increasing day by day. As a result amount of waste plastic also increases.Therefore it is necessary to utilize the wastes effectively with technical development in each field. We can manage plastic waste, consisting of carry bags, cups and other packing containers by using it for road construction after their disposal. Use of plastic bags waste in road construction is a potential field for the use and scientifically disposal of these industrial waste polymers into roads instead of banning their use or resorting to non-environment friendly methods like burning, landfills etc. By mixing plastic with bitumen the ability of the bitumen to withstand high temperature increases. There was a substantial increase in Marshall Stability value of the BC mix, in the order of two to three times higher value in comparison with the untreated or ordinary bitumen. This is the major advantage with plastic roads even through Polymers mixed with bitumen increased the construction cost up to six per cent. Plastic road doesn’t need repair up to 5-6 years. Chances of water seepage are less due to the presence of plastic. As every km of plastic road needs 2 tonnes of plastic waste, the environmental hazards caused by the non-biodegradable item is reduced. In the present paper developed techniques to use plastic waste for construction purpose of roads and flexible pavements has reviewed. In conventional road making process bitumen is used as binder. Such bitumen can be modified with waste plastic pieces and bitumen mix is made which can be used as a top layer coat of flexible pavement. This waste plastic modified bitumen mix show better binding property, stability, density and more resistant to water. Key Words: Bitumen Mix, Flexible pavement, Non-Biodegradability, Plastic Waste, waste poly