Levantamento das características e formas de reaproveitamento de resíduos de minério de ferro na construção civil

Abstract

Brazil is one of the largest producers of iron ore, resulting in a large production of tailings. These tailings are deposited in dams or stored by stacking, but in both cases they are harmful to the environment. The tailings damage the soils, groundwater, rivers, and no more serious cases, when dams rupture, as were the cases of Mariana and Brumadinho, killing the statistics of people. Several studies have been carried out to modify iron ore tailings in construction materials, to reduce the environmental impact.Therefore, the present work aims to carry out a bibliographic survey regarding resources and ways of reusing iron ore residues in civil construction. You can see that there are several types and benefits, and that can contribute to iron ore tailings resources being so different. A characterization of rejection of iron ore is very diversified, shown or rejected has very different characteristics for each author analyzed. The main civil construction materials analyzed were: pavements; paints, ceramic compounds, alkali-activated cement and cementitious composites. It can be seen that when incorporating or rejecting iron ore from these materials, the advantages, better some characteristics, such as: mechanical resistance, workability, wear and other things. However, some properties and uses are still one of the biggest developments and explore other properties and new contexts.