## 1 Introduction
There are various investigations in which electric arc furnace slag has been used as a partial substitute for aggregate in hot mix asphalt [24], warm mix asphalt [25], even bituminous mixes with bitumen emulsion [26]. In all these investigations, it was possible to corroborate the excellent mechanical properties of electric arc furnace slag [27], as well as the durability characteristics which they give to the bituminous mix conformed [28]. In turn, the ladle furnace slag has been used in a smaller number of studies, mainly as a partial substitute for cement in concrete [29, 30, 31] or in soil stabilization [32]. In these researches, the cementitious properties of the ladle furnace slag could be corroborated [33,34]. Therefore, in this research, both wastes will be used for the conformation of hot mix asphalt of discontinuous grading, as a total substitute of the conventional aggregate, the extraction of aggregates therefore not being necessary. The choice of this type of discontinuous grading bituminous mix is based on different reasons. On the one hand, in this type of mix, the compression loads of the traffic are directly supported by the coarse aggregate through internal friction, so the use of high strength electric arc furnace slag means the optimization of the properties of this waste. On the other hand, in this type of mix a higher void content is obtained, making it possible for rainfall water to be drained off and for the surface roughness of the pavement to be improved. Finally, this type of mix has fewer problems of plastic deformation, since the grading is conformed by a lower percentage of fine aggregate. Nevertheless, in this type of mix, if it does not have an adequate percentage of bitumen, can produce aggregate springing, cracking, and reduction of the working life. Therefore, it is necessary to produce a quality mastic formed with the bitumen and filler capable of resisting traction loads. In this research, the percentage of bitumen is increased to obtain a higher quality mastic and at the same time provide the pavement with the appropriate flexibility for its durability over time. Thishigher percentage of bitumen is obtained by adding cellulose fibers discarded from the papermaking industry. Cellulose fibers from the papermaking industry are a currently unused waste. These fibers are derived from the process of producing cardboard from recycled paper. The addition of these fibers, conditions the absorption of a higher percentage of bitumen in the bituminous mixture, because if a higher percentage of bitumen is added than the aggregates are capable of absorbing without the addition of these fibers, there will be bleeding of the binder and significant plastic deformations. In short, in this research, mixtures of high quality and mechanical resistance for high traffic roads are developed, using as coarse and fine aggregate, electric arc furnace slag, ladle furnace slag as filler, and like an additive for the retention of bitumen, cellulose fibers from the papermaking industry. To the evaluation the goodness of the incorporation of this waste, the mixture manufactured was compared with the waste detailed with mixtures of the same category conformed with conventional materials, thus detecting the improvements produced by the use of the waste. At the same time, and with the aim of identifying critical points as well as compatibility between the wastes, a complete physical and chemical characterization of the wastes was carried out. The results showed that bituminous mixtures conformed to electric arc furnace slag, ladle furnace slag, and cellulose fibers, and possessed greater mechanical resistance and better behavior to plastic deformation. Obtaining, therefore, a quality, resistant, durable, and sustainable bituminous mixture at a lower economic and environmental cost.