Análise do desempenho da adição de resíduos de usinagem nas propriedades mecânicas do concreto

Abstract

This study presents the evaluation of the performance of concrete with the addition of lathe machine scrap, as a sustainable alternative for civil construction. Mixtures containing 1%, 1.5% and 2% of waste addition were tested for slump, water absorption by capillarity compressive attraction strength, flexural tensile strength and compressive strength. The mix with 1.5% of waste exhibited the lowest water absortion, favoring durability, and good results of tensile strength by collaboration. The mix with 2% also showed good strenght results, particularly in tensile strength by traction and flexure, although it has a lower workability of the mixes, reducing ease of handling in the fresh state. Meanwhile, the mix with 1% showed some improvements in mechanical properties in relation to conventional concrete, but less expressive than the other additions. Overall, the mix with 1.5% waste addition demonstrated the best performance, followed by the mix with 2%. This study indicates that the addition of the machine scrap to concrete is an effective and environmentally responsible alternative, with significant improvements in concrete properties and a relevant contribution to the reduction of industrial waste. [resumo fornecido pelo autor]