RHEOLOGICAL PROPERTIES OF RECYCLED LOW DENSITY POLYETHYLENE AND POLYPROPYLENE MODIFIED BITUMEN

Abstract

Polymer-modified bitumen has been used in civil engineering practice from a long time. The addition of polymers in bitumen improves the deformational stability and durability of bitumen. In the present study, the effect of waste Low Density Polyethylene (LDPE) and Polypropylene (PP) obtained from waste carry bag, on various properties of bitumen such as penetration, ductility softening point have been evaluated. Waste plastics, whose disposal is a matter of concern can be used successfully to modify the bitumen, these waste polymers are added in 2%, 4%, 6%, 8%and 10% percentages in 60/70 penetration grade bitumen and its effect on different properties of bitumen are evaluated. The result of experimental study shows that there is significant improvement in the properties of bitumen due to LDPE and PP modification.