Abstract
Usually plastics are disposed in land filling and are burnt in free atmosphere which are detrimental to health. Land filling may affect water recharge, diminishing soil microbial activity, water line and drainage clogging. If waste plastic reaches to its ignition temperature, it evolves nontoxic gases which can cause abnormality in human beings. Thus its disposal is really a hard problem due to its non-biodegradability and unaesthetic view. Eventually Engineers have come across the point to use waste plastic as a binder material in its melt condition. This method has helped us a safe disposal of plastics junk, with operative rheological properties in the construction of pavement. Plastic bottles, packing containers and shopping bags production is increasing gradually, these results in the increase of waste plastic. Low Density Polyethylene (LDPE) with different percentage by weight of bitumen was mixed with 60/70 grade bitumen. Standard Tests on bitumen were conducted for this purpose i.e. Penetration Test, Flash Point and fire point Test, Softening Point and Binder Density. Low Density Polyethylene (LDPE) was mixed with bitumen that showed better result for the tests.
Highlights
Waste plastic production deposition is a problem
The rheological properties of plastic mix are compared with ordinary Bitumen, and penetration test showed a result in decreasing order while softening point, flash and fire point test and binder density of plastic mix bitumen showed a result in increasing order
0.5 kg of 50 micron plastic bags (LDPE) was brought for conducting the project work to observe the rheological properties of plastic mix with bitumen
Summary
Waste plastic production deposition is a problem. Dumping and combustion problems might be reduced up to a limit, if these materials are utilized properly in construction of highways. The rheological properties are improved by using plastic waste as a binder material in melt condition, which has helped us to reach the result for safe dumping of waste plastic. Using pure bitumen in wearing and base course can cause different failures like showing, bleeding in hot weather and longitudinal, transverse cracks and potholes in cold weather. In such conditions we cannot apply heavy axle load on pavement structure. In the present conditions it is necessary to reorient bitumen by adding modifier to upgrade the rheological properties
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