Comportamento do módulo de elasticidade do concreto substituindo parcialmente o agregado miúdo por borracha proveniente de pneus inservíveis

Abstract

The benefits of urban development are succeeded by consequences, once overlooked bring notable negative impacts. Rubber tires come from technology evolution and every day their demand is increasing, but the destination of this material after become useless is a problem. The waste tire is a solid waste with large volume and difficult to stock, due to this new alternatives are necessary for its destination. In order to contribute with a sustainable alternative, this study analyzes the impact on mechanical proprieties of concrete with partial substitution of the traditional fine aggregate for rubber from waste tires in portions of 5%, 7.5% and 10%. The main characteristic analyzed is the modulus of elasticity, it was understood that the rubber collaborates with this parameter. At the same time, observations are made on the mass of the specimen and the workability of the concrete when subjected to the replacement portions, always being compared with a trace of reference concrete, without addition of rubber. The results obtained were relevant, it was possible to quantify the impact of the rubber on the concrete and the data obtained were consistent with the existing literature. The modulus of elasticity along with the mean mass of the specimens showed expected reductions and the slump test was affected drastically with the substitution.