Aproveitamento de resíduos oriundos da mineração na produção de blocos ecológicos

Abstract

The mining is an important sector in the global development, however the activity is responsible of a large reject generation in the mineral processing. This waste requires an environmentally correct destination, being the reuse an correct destination form, mitigating the environmental impacts. This study consists in the use of mining waste to manufacture ecological bricks, residues such as mineral ash, vegetable ash, limestone and river sand, as well as cement and lime. It was tested the effect of the process on wet (saturated in water) curing and ambient cure, with a time of 7 and 28 days, for compressive strength tests. To obtain the mechanical strength of the samples, the procedure of the NBR 7215/1996 standart - Resistance to compression of the Portland cement was used.The final results showed that 100% of the composite traces with cement presented satisfactory resistance, being classified in at least one of the classes of norms that guide the study. It is concluded that it is possible to produce ecological bricks which the reuse of materials and at a lower cost than the market price.