Utilização de concreto permeável produzido com agregados reciclados provenientes de resíduos de construção e demolição para aplicação em calçadas e áreas de tráfego leve

Abstract

Population growth in urban centers and the consequent need for expansion of public elements, resulted in the emergence of various social problems, among many, the generation of waste and soil sealing. Given this scenario, the importance of studying alternatives capable of mitigating the amount of solid waste discarded in landfills, and also of presenting a sustainable proposal for the use of these wastes, from the implementation of permeable pavements arising from the use of construction waste, was perceived. and demolition – RDC. Such a measure can contribute to a significant increase in the infiltration of rainwater into the soil, increasing groundwater recharge and reducing the amount and speed of surface water runoff in urban centers. Thus, this work studied the effectiveness of permeable concrete manufactured from the use of RDC, in partial and/or total replacement of mineral aggregates in the manufacture of permeable concrete slabs. For this purpose, concrete mixtures were made using aggregates from RDC, and their mechanical properties – compressive and tensile strength, and physical – permeability, were verified. The results obtained showed that for the studied mixtures, the concretes with RDC presented satisfactory results, meeting the minimum normative criteria for the production of permeable concrete slabs.