Aproveitamento de resíduos de EPS e EVA como agregados em concreto leve

Abstract

The final disposal of solid waste is considered a worldwide challenge and the Expanded Polystyrene (EPS) and Ethylene Vinyl Acetate (EVA) residues demand concern regarding their management. They have good characteristics to be used in construction, knowing this, the present study evaluated the use of EPS and EVA residues as an aggregate in the manufacture of lightweight concrete. Light concrete specimens with 60% and 70% EPS and EVA addition to coarse aggregate were fabricated and water absorption, voids index, specific mass and compressive strength tests were performed. The results of the water absorption, voids index and specific mass tests are in accordance with the requirements of the regulations, which showed that the lightweight concrete with the addition of 60% and 70% EPS and EVA can be used for the manufacture of blocks. lightweight concrete and be used for wall sealing and execution. For the compressive strength test, the specimens with the addition of 60% EPS were the ones that obtained the most satisfactory results, reaching approximately 5 MPa, the other traces obtained resistance of an average of 3,35 MPa. Based on all the results obtained, lightweight concretes with 60% and 70% addition of EPS and EVA can be used for non-structural purposes in civil construction, being for sealing, thermal and acoustic insulation, filling of slabs and subfloors and in non-load precast elements.