Avaliação da reutilização de agregados reciclados de argamassa na produção de emboço

Abstract

There is great concern about the environmental impact caused by the generation of debris, mainly in the construction industry, as there is a high rate of wastage. Some studies show that most of the debris generated by construction is mortar. This point to the ideia of sustainability in civil construction and seek studies to recycle it. The aim of this paper is evaluate the performance of cover mortar produced with partial replacement of natural aggregate by recycled waste of mortar aggregate. For this, we developed three mortar mixes, replacing natural aggregate by recycled aggregate in the proportions of 25%, 50% and 75%, beyond the reference mortar. Tests to evaluate the properties of the fresh and hardened state were performed according their respective standards. Fresh state tests were consistency index, bulk density and air content. In the hardened state it were evaluated bulk density, water absorption by capillarity, capillarity coefficient, potential grip traction strength and tensile strength in bending. Results point that the optimal replacement content of natural aggregate by recycled aggregate is 25%