Reutilização de resíduos sólidos da construção civil e de pneus inservíveis na pavimentação

Abstract

n view of the growing environmental concern regarding the significant increase in the exploitation of natural resources and the generation of solid waste that is justified, among other factors, by the population increase and its behavioral changes in the last decades, it was necessary to seek alternatives to reduce the impacts to ensure that future generations can meet their needs. The principle of the 3R's - Reduce, Reuse and Recycle - has as main objective the non-generation of waste, which in many cases is not possible, being the most viable alternative to reuse or recycling. These measures are essential for sustainable development and adequate disposal of various wastes, such as construction waste and unserviceable tires, which in Brazil generate an average of 510 and 61 million / year, respectively. This study focuses mainly on the recycling and reuse of solid waste from construction and waste tires in the construction of pavements, with the purpose of reducing the volume of waste that is improperly disposed of, causing environmental, economic and social damages. The use in pavement is a promising alternative for the adequate final destination of both residues, since besides allowing the application in great volume, it presents a reduction in the costs and an improvement in its characteristics, like durability and resistance to the fatigue, when being compared to a conventional floor. One of the objectives was to demonstrate the technical, economic and environmental applicability of these recycled construction aggregates in the base layers, sub-base and reinforcement of subgrade and those of rubber from the unserviceable tires in the covering layer of flexible pavements. This applicability can be verified from the publications of laboratory researches and practical applications of these recycled in paving both in Brazil and in the world.