Abstract
Proper disposal of plastics and its derivatives is one of the biggest challenges all over the globe. Due to the improper management of plastic product environment is being polluted. Plastic waste generation and plastic waste-based pollution in Bangladesh is leaping at a high pace. Among numerous ways of disposal of waste plastics, one can be using it in flexible pavement construction. According to the Bangladesh Waste Database 2014, Dhaka city alone produces 25.44% (5,925.51 tons/ day) of waste, of which 8.45% is plastic. In the construction of bituminous pavement, plastics, as well as construction debris, are being used in the form of aggregate and filler materials popularly. This study focusses on the improvement of properties of bitumen by blending it with LDPE (Low-density polyethylene) and PP (Polypropylene) at a different proportion. Three cases were considered in the study for plastic waste addition, Case-01:- only LDPE; Case-02:- LDPE: PP=3:1; Case-03:- LDPE: PP=1:1. For each case, 3%, 6%, 9%, 12%, and 15% of plastic waste was mixed with bitumen. It was found that the penetration value and ductility decrease with the increasing proportion of plastic waste in bitumen, whereas the softening point increases for every case. Loss on heating, flash & fire point also been improved with the plastic addition. The performance of Case- 03 (LDPE: PP=1:1) is better than others. Minimum penetration value, 11 and maximum softening point, 90°C, is found for this case, which indicates a 90% improvement compared to virgin bitumen. Due to the addition of plastic waste, the ductility always gets affected. But overall, a significant improvement in the properties of bitumen is noticeable.
Highlights
Waste management, solid waste management is the most unestablished area of management round the globe
That’s why this study focused on the effect of mixed plastic waste blended with bitumen on its properties
The greater goal of the study is to keep the environment clean and safe for the inhabitants of this planet. Keeping this goal ahead the specific aims of this study is to, (i) Justify the potential of the generated plastic waste to serve as a road construction material. (ii) determine the rheological and the engineering properties of bitumen blended with LDPE and PP for different compositions. (iii) Observe the improvement of the properties of virgin bitumen after mixing polymer
Summary
Solid waste management is the most unestablished area of management round the globe. The appropriate way to dispose the solid waste is in dark to us. It is our problem it’s a global problem which gradually making this planet worst place to live. The amount of traffic on the road is increasing only To accommodate this enormous number of traffic roads are being constructed more and more [1]. This problem can be reduced to a significant extent by using plastics in road construction. The amount of bitumen can be reduced as well as the strength parameters can be improved by blending plastics with it. This is the technique which has been adopted by the authors in this study
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