Abstract:
Bitumen is a complex hydrocarbon, sourced from petroleum refineries as by product in frictional distillation. It is widely used as a binder in flexible pavement in road construction and rehabilitation. Petroleum is a natural resource, and its reserve are depleting rapidly with the passage of time. Production of bitumen directly depends on petroleum. Bitumen consumption has been increased by road construction industry for the past few years due to rapid expansion in road networks in developing countries, causing excessive environmental pollution due to hazardous fume produce during burning of bitumen in pavement paving process. The depleting reserve of petroleum and environmental concern led researcher to look for an alternative binder that could replace partially certain percentage of bitumen and environment friendly. Bio oil which include vegetable oil have proven as good alternative binder so far. Although they decrease viscosity of bitumen but increases resistance against fatigue and low temperature cracking of bitumen. Tire rubber powder and bagasse ash are waste materials obtained from tire and sugar industry respectively. Tire rubber powder and bagasse ash both contain silica in substantial percentage which impart them with good physical interaction properties, resulting in improving physical properties of bitumen, including penetration softening point and viscosity. This research work explicitly aims at replacing certain optimum percentage of bitumen with Waste cooking oil (WCO) Tire rubber powder (TR) in the presence of Bagasse ash (BA) used as additive. About 5 % of WCO and 15% TR were used as a replacement percentage in bitumen in the presence of 8 % bagasse ash used as additive. Alternative binder obtained were tested to carry out performance evaluations, the results obtained were promising. Results shows that modified bitumen shows more resistance to rutting, fatigue and low temperature cracking than virgin bitumen. Cost analysis were evaluated in cost of bitumen used per kilometer. Cost analysis shows that cost of modified bitumen incorporated with waste material is lower as compared to cost of Virgin bitumen. The research work directly contributes to the global initiative of making sustainable use of Bitumen (natural resourced material) and environmental protection by developing alternative binder for flexible pavement by incorporating waste material in to bitumen. The use of waste material in bitumen will solve the waste disposal problem and will minimize unhealthy environmental hazardous fume produced during bitumen burning, thus minimizing environmental degradation. Keywords: Bitumen, Waste materials, Alternative Binder
