Utilização de resíduos da construção civil na produção de pisos ecológicos drenantes

The main objective of the research was to evaluate the incorporation of recycled concrete and ceramic aggregates for the resistance class of 20 MPa, following the minimum standards required by the technical standard ABNT NBR 16416/2015. The study was conducted in four stages. In the first stage, a systematic review of the literature was conducted, resulting in seven scientific articles focused on the study proposal. In the second stage, a case study was carried out on the generation of construction waste (RCC) between two works that used different construction systems. One was executed in structural masonry, and the other in precast construction. In the third stage, the behavior of the mechanical resistance and permeability of the ecological draining floor was evaluated. This involved the analysis of recycled aggregate in natura, as well as its mixture with natural aggregate (gravel 0), which were assessed for compressive strength after 28 days. Since there is no standardization for the use of specific dosages of permeable concrete, the mix for the experiment was determined based on some literature indicating a 1:3 variation (cement/aggregate mass ratio). The water/cement factor was set at 0.40 as a starting point during the molding of the specimens. Generally, the resistance groups with contents of 45% and 65% of concrete and ceramic waste met the requirements established by ABNT NBR 9781:2013.