Melhoramento de solo através da adição de resíduo da Construção Civil no Brasil: revisão sistemática.

Abstract

Currently in Engineering, it is common to encounter situations in which the soil available for carrying out a work is not ideal. The substitution techniques adopted by the engineers are expensive and, therefore, one of the great challenges of the current Geotechnical Engineering is to find more economical ways to solve the soil stabilization problems. Among the soil improvement techniques the ones that use aggregates are shown as a good option. Obtaining natural aggregates has a great impact on the environment, so a sustainable solution is the use of aggregates obtained from Construction and Demolition Waste (RCD). In this context, this research aims to identify trends in the use of RCD in soil improvement in Brazil through academic studies in the last ten years. The research was carried out along the lines of systematic research, more specifically by the Systematic Search Flow (SSF) method, which consists of defining the platforms for collecting scientific papers in the last ten years, which were CAPES AND COMBRAMSEG, then all were evaluated the works that resembled the theme of study, which eliminates the author's bias. Of all the evaluated works, 34 scientific papers were found that discussed soil stabilization through soil-RCD mixtures. Studies involving soil-RCD mixtures have been growing in the last ten years, reaching the highest number in 2018, with 14 academic productions, with a prominent position in the Northeast with 14 publications. The purposes of paving, dam filter and landfill were identified for soil-RCD mixtures evaluated by 19 different types of tests, with 94% of the results pointing positively to the use of RCD for soil stabilization. As general conclusions, the studies carried out with construction and demolition waste point to the viability of reusing the RCD in order to replace scarce natural resources, reduce the illegal deposition of solid waste, and even improve the geotechnical properties of the materials used in the works.