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The global demand for metals has been growing intensely in recent decades. Therefore, it increases the amount of mine waste produced in mining and beneficiation of ores, from which metals of economic interest are extracted. This increase in demand allows that areas less rich in mineral become economically feasible, thus generating millions of tons of mine waste. The disposal of the tailings requires large dams and dikes, which in turn require special care from geotechnical and environmental aspects. Thus, the use of mine waste as landfill construction material would minimize the volumes of tailings dams. To make the mine waste useable from a geotechinical point of view it is necessary to determine the geotechnical parameters involved with the application. One of the most important aspects are the shear strength. In this paper, an experimental investigation of geotechnical behavior of a bauxite tailing from Miraí mine, located in Minas Gerais – Brazil, is presented. The geotechnical characterization of a bauxite tailing is shown, and the mechanical behavior of the compacted material is given. The investigation was performed with Triaxial tests (CAU), in order to characterize the material in terms of shear strength and deformability.
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