MODIFICATION OF BITUMEN WITH WASTE PLASTIC MATERIALS FOR ROAD CONSTRUCTION IN GHANA (JOHNSON K. APPIAH)

Efficient management of municipal solid waste (MSW), especially waste plastic components is a growing challenge for many developing countries including Ghana. This research study was conducted to determine the effect of blending used commodity plastics; namely high density polyethylene (HDPE) and Polypropylene (PP) with conventional AC-20 graded bitumen. The plastics were chopped and blended with the bitumen ‘in-situ’, with a shear mixer at a temperature range of 160 ºC-170 ºC.

Basic rheological parameters such as penetration, ring and ball softening point and viscosity test were employed to determine the resulting changes from the base bitumen. In a broader scope, this study is to generate scientific data which will form the basis for using plastic modified bitumen in the construction and repair of roads in Ghana; as well as provide alternative recycling options for managing plastic waste.