Title: Experimental investigation on modification of rheological parameters of bitumen by using waste plastic bottles
Abstract: Bitumen is the most popular binding material in road construction. Nowadays due to rapid infrastructure growth and increasing in the number of vehicles it is necessary to build the roads which can sustain adverse traffic loading and extreme weather conditions. Also, disposal of waste plastic is a big problem nowadays. Studies have found that, effective use of plastic in the bitumen to improve its original properties. Plastic added to bitumen by two ways first is dry process and another is wet process. Most of the research was done on dry process. Coming to wet process some research works carried on adding waste plastic bags to the bitumen and found satisfactory. Present study concentrating on adding the shredded waste plastic water bottles to the bitumen to improve its rheological properties. In present study plastic is heated up to its melting point, then bitumen is added to the liquid plastic and mixed thoroughly with the help of mechanical stirrer. On the prepared composite material (i.e. plastic modified bitumen – PMB) laboratory tests was conducted like softening point, ductility value, elastic recovery, penetration, specific gravity, flash and fire point. In continuation, conducting Marshall stability test on the same plastic modified bitumen samples to finalize the optimum percentage of plastic to be added. Finally, comparison made between plastic modified bitumen sample with original bitumen sample. Present study concluded that, replacing the bitumen with 5% & 7.5% of PET plastic improves the rheological properties of the bitumen. From the Marshall test, it was declared that 7.5% replacement of bitumen with plastic gives more stability than 5% replacement. From this experimental investigation declared that, 7.5% of the PET plastic is the optimum percentage which can add to the bitumen to use in flexible pavements for improving the maintenance period also for improving the rheological parameters of bitumen.
Publication Year: 2020
Publication Date: 2020-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 10
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