All discarded residues of the steelmaking industries and the cut of ornamental stone constitute a serious problem, once they occupy large ground areas that in turn become economically inactive. Usually, the solutions found out by the companies to discard such residues are the sanitary landfill and municipal solid wastes; however, in the structure of great cities, there are no spaces for this kind of disposal due to agglomeration of peoples in the urban centers and the high valuation of ground lots in some areas. These residues are found in great volume in the center-western region of Minas Gerais state and they don’t find adequate final destination. The waste question is also relevant, once the discarding of industrial residues results in loss of goods that could be otherwise recycled and, by this way, generate other production goods. In this context, the present work aims at to contribute for the recycling of the residues generated in the referred region in order to prepare mortar for civil construction. The thermal behavior of the slag/granite and slag/slate composites was experimentally analyzed with the objective to find some application of these materials in the ground of civil engineering. With these thermal behavior results, an investigation was carried out of the viability of substituting the slag/granite composites for the hydrated lime, through the assays of water retention in the cool state and of the axial and of axial compressive strength in the hardened state with the objective to contribute for a new use of the new use of the residue.
Slag; granite; mortar and mechanical strength
