Improved Performance of Asphalt Concretes using Bottom Ash as an Alternative Aggregate

Road networks are major infrastructures that support the economic development in both developed and developing countries. Bottom ash (BA) is a by-product from coal-fired powerplants, which composed of lipophilic molecule with effective reactivity to bituminous binder. BA was adopted this research, as green fine aggregate, improve mechanistic performance asphalt concretes research. The effect BA-replacement ratio (0%, 10%, 15%, 20% 25%, by total weight natural aggregate) on Marshall stability flow, indirect tensile strength (ITS), BA-asphalt concrete, were examined. tests included indirect-tensile condition (indirect resilient modulus (IT Mr), fatigue life (ITFL)) compressive (permanent deformation (PD), rut depth, skid resistance). replacement improves index, ITS, up optimum ratio, 5%. change IT Mr found be linearly proportional for all ratios. ITFL dependent upon repeated stress level can estimated terms Mr. For condition, PD, rutting, resistances improved replacement. lowest PD depth well highest resistance, ITFL, at outcome research will promote usage cleaner additive concrete pavement, useful engineering environmental perspectives.