EXPERIMENTAL STUDY OF THE PERFORMANCE OF POROUS ASPHALT MIXTURE WITH FIBER STABILISATION

The road surface layer with open graded mixture (porous asphalt mixture) has been developed in order to allow water to pass through t he pores in the pavement to drain into the sewer. The porous asphalt mixture provides more pores capable of storing more asphalt which will provide more pliability for asphalt concrete. The study aim s to investigate the performance of pavement of porous asphalt mixture using petroleum asphalt (pen .60/70) and polymer modified binder stabilised with polypropylene. The use of both types of asphalt mixed with polypropylene is to make it more viscous as to thicken the laminating cover of the surface which will serve as hinges that would secure better layer pliability. The analysis of the performance of porous asphalt mixture was carried out with Marshall Method andparameter tests such stability, cantabro loss , porosity, permeability, and binder drain down and (new to the study) penetration index.