Abstract
Type of shopping bag that are made from various kinds of plastic mainly from low & high density Polypropylene are carrier bags, shopping bags or plastic grocery bags. These are often called single-use bags as these are used to carrying stuff from a store to a home. The uses of these bags are increasing day by day due to rapid increase in population and growth in urban area. Plastic bags not only clog drainage systems but also contribute to flooding. Infrastructure of trash collection is less developed in Pakistan which causes a serious problem of littering. Plastics are friendly to consumer but are not environmental friendly due to their biodegradability. General methods to disposed waste plastic are either by incineration of materials or by way of land filling which are hazardous for human health and environment. This paper covers a new method to utilize waste plastic bags in modification of bitumen not to just effectively utilize waste plastics but also to improve strength properties of bitumen concrete mix of flexible pavement.
Highlights
Plastic bags are friendly use for a common man due to their low cost and easy use but on other hand they are a great threat to environment due to their non-biodegradability
For pavement purpose Various Grades of Bitumen are used such as Grade: 60/70; Grade: 80/100 etc. but the one used in this research paper is Grade 60/70 from Attock Refinery Limited Rawalpindi, Pakistan
The results show that initially the strength was increased by the addition of plastic where the flow was decreased but as the plastic percentage was increased the strength got increasing but on the other hand flow star getting increased. but at 10% the flow was almost the same as it was for the 0% plastic so up to 10% plastic can be added to modify bitumen for more strength with same flow as that for ) % plastic
Summary
Plastic bags are friendly use for a common man due to their low cost and easy use but on other hand they are a great threat to environment due to their non-biodegradability. As these cannot be disposed scientifically it creates ground and water pollution. One of great solution for this is to mix it with a suitable percentage with asphalt in road mix which utilize waste plastic and modify asphalt and work as a strength modifier for asphalt By this methods waste plastic is brought in to work without harming environment and this method is not just.
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