Estudo do concreto produzido com agregado reciclado misto

Abstract

This research was conducted to address the need for sustainable solutions in waste management in the construction industry. The main objective was to evaluate the performance of mixed recycled aggregate (MRA) - which is the waste generated in construction sites, processed through grinders and transformed into coarse and fine aggregate depending on its purpose - as a substitute for natural aggregate (NA), through compression strength tests on concrete specimens. Three proportions of NA replacement by MRA were analyzed: 0%, 20%, and 40%, considering a single concrete mix. A percentage reduction in strength was expected due to the high content of ceramic materials present in the MRA. However, the results revealed that the concretes with up to 20% replacement achieved satisfactory strength values, exceeding 20 MPa as required by the standards. Thus, the feasibility of using mixed recycled aggregate as a sustainable alternative in the construction industry was demonstrated.