Utilização de resíduos de borracha de pneu na fabricação de tubos de concreto

Abstract

[EN] The concrete pipes are usually used in systems of drainage, of sewage collection and of potable water supply. In relation to the concern of sustainability in the process of manufacturing concrete pipes, the addition of the tire rubber residue into the concrete appears as a possibility to mitigate environmental impacts, since this residue is abundantly generated during the retreading process. Different contents of tire rubber residue were added to the concretes that were used to manufacture pipes with nominal diameter and length of, respectively, 600 mm and 1.5 m. It was assumed that these pipes would be intended to be a part of drainage systems for rainwater. The pipes made with these different concrete mixtures were subjected to a diametral compression test and also to a water absorption test. These tests are detailed by the brazilian standard NBR 8890 (ABNT, 2007). The results showed that the tire rubber residue has potential to be added to the concrete used in the production of pipes.