Bituminous Mix Design Using Plastic And Rubber Waste Materials For Dence Bound Mecadam

Abstract

The seasonal change in temperature and loading nature has a significant effect on asphalt behavior
because of its visco-elastic nature. Several types of flexible pavement failure/distress occur due to this behavior of
asphalt binder, among which rutting and fatigue cracks are very common. The waste plastic and rubber can be
used to partially replace the conventional material to improve desired mechanical characteristics for particular
road mix. Waste like plastic bottles, polymers, cups, waste tyre’s can be re-used by powdering or blending it with
crushers and can be coated over aggregate and bitumen by any heating process.
In this study, Low Density and High Density Polyethylene and Crumb rubber will be used as additions to base
bitumen. In the present study, a comparison is carried out between use of different waste plastics like plastic
bottles, polymers, cup and crumb rubber for different percentage by weight of bitumen in dense bituminous
macadam (DBM) mix to analyze which has better ability to modify bitumen so as to use it for road construction
particularly in base layer. The laboratory experiments for aggregates, bitumen with waste plastic and crumb
rubber, Marshall stability test for mix design etc. will be carried out as per IRC guidelines. This type of
application of waste plastics and waste rubber tyres in road construction activity will not only reduce the problem
of environmental pollution, but also save the costly and scarce bitumen.