This paper reports the results on the evaluation of mechanical properties of asphalt concrete using baghouse dust as filler material. Ordinary Portland cement and limestone dust are conventional materials used as mineral fillers in asphalt production. However, an increase in the cost of these materials in recent times has led to some construction companies avoiding their use as mineral fillers. Baghouse dust is a waste obtained from the screening process of asphalt aggregates in an asphalt plant that results in air pollution as these asphalt plants emit the wastes into the environment. This project is aimed at partially replacing limestone dust; a conventional filler material with Baghouse dust at varied proportions to examine its mechanical properties, in order to ascertain whether or not it can be suitable as a filler material for asphalt concrete production. Twelve (12) numbers of asphalt concrete samples were prepared using The Marshall Mix Design Method. Varied proportions of Baghouse dust at 0%, 10%, 20% and 30% were used to examine the various mechanical properties such as bulk density, specific gravity, Marshall-stability and flow, voids in the mix, voids filled, and the stiffness of the asphalt concrete. The results from this paper will help Civil Engineers in the effective cost reduction of filler materials and will also further reduce the effect of Baghouse dust waste pollution in the environment.

Keywords : Asphalt, Baaghouse Dust, Filler, Cement, Recycling, Limestone, Fine And Coarse Aggregate