SUSTAINABLE REUSE OF MANGANESE TAILINGS: A REVIEW OF APPLICATIONS IN CIVIL CONSTRUCTION

Abstract

The present article provides a literature review on waste generated from manganese mining, with emphasis on its physicochemical characteristics and the possibilities of reuse as an alternative material in civil construction. Manganese mineral exploitation, historically relevant in Brazil especially in the regions of Serra do Navio (AP) and Carajás (PA) has produced large volumes of waste that mostly remain without proper disposal, representing a significant environmental liability. The studies analyzed show that these residues have a predominantly inert composition, with high Mn content and low levels of impurities, characteristics that make their use feasible as a partial substitute for natural aggregates in concrete, mortars, and ceramic materials. Reported results in the literature even indicate improvements in mechanical properties, such as increased compressive strength, when incorporated in controlled dosages. It is concluded that the reuse of manganese tailings presents high technical and environmental potential, aligning with the principles of sustainability and circular economy, although further studies on the durability and environmental safety of the produced materials are still needed.