Reciclagem de pneus para utilização na fabricação de concreto estrutural

Abstract

The disposal of unusable tires in the environment creates a huge environmental problem. The use of these residues in the formulation of concrete has aroused increasing interest in recent decades, representing an innovative and sustainable approach to dealing with this global problem, including helping with reverse logistics, contributing to economically viable solutions to comply with law nº 12.305/10 regarding National Solid Waste Policy (PNRS) and CONAMA Resolution No. 416/09 of IBAMA, which provides guidelines for integrated management and solid waste management. The objective of this study is to carry out a bibliographical survey in order to obtain data on the incorporation of rubber waste in the manufacture of concrete, in order to understand how this modification in the composite can modify its mechanical properties and verify whether it is possible to obtain satisfactory results with different percentages and addition or replacement of materials, ensuring performance such that this change does not affect the standard limits. The experiments reported in the literature show data of variation in the most important properties of concrete: compressive strength and modulus of elasticity. The correlations showed the importance of choosing a good mix for preparing the concrete, correctly and efficiently determining the water-cement ratio and mainly the appropriate percentage of addition/replacement of rubber residue in the mass of fine aggregates.