Utilização de fibra de coco de maneira sustentável adicionada ao concreto para redução de custos

Abstract

The present work aims to analyze the technical feasibility of using coconut fiber residues in the production of concrete in order to reduce costs. Concrete is the most important material in civil construction, in general, it is the most used input in any type of work, be it small, medium or large. It is a composite material, that is, it is composed of a mixture of 2 or more materials. This alternative has the advantage of adding a renewable and highly available material to concrete, thus resulting in a low cost for production. The mechanical properties of three types of concrete were studied. To assess the behavior of the concrete, the tests of resistance to axial compression, abatement and water absorption tests were carried out. It was observed that, for the studied content of addition, the variation of the coconut fiber length to the concrete caused small or minimal variations in the consistency and an increase in the compressive strength of the concrete was verified with the presence of the coconut fiber in relation to the reference concrete. This increase in strength was shown to be associated with decreased water absorption by immersing concrete with the addition of coconut fiber. The results obtained point to the technical feasibility in the use of coconut fiber in concretes under the evaluated conditions.