Determine the percentage of Recovering FCC Spent Catalysts as Mineral Filler in the Asphaltic Concrete Mixture

摘要

Recovering fluid catalytic cracking (FCC) is an industrial waste produced from the cracking of petroleum in oil refineries. In Vietnam, it is discharged a lot from the Dung-Quoc and Nghi-Son oil refineries. Besides, asphalt concrete mixture consisting of aggregate, filler, and asphalt binder, is requested with a significant volume for the development of Vietnam. The natural filler usually is the limestone powder that causes the cost of asphalt concrete mixtures increasing. Finding the resource replacing for the limestone powder could decrease the cost of asphalt concrete. In this experimental study, the spent catalyst replaced a part of filler in asphalt concrete mixtures was performed. The study explored the possibility of using this material in road construction in the form of filler material in asphalt concrete mixtures. The optimum percentage of spent fluid catalytic cracking catalyst (SFCC) replacing natural filler to the point that the characteristics of the mixture not be degraded was founded based on the Marshall methods. As a result, mixtures that used 5% SFCC of the weight of hot mix asphalt (HMA) had the best Marshall characteristics.