Análise do aproveitamento de garrafas PET recicladas trituradas na confecção de tijolos de solo-cimento

Abstract

The improper disposal of solid waste, especially PET bottles, is still a problem in Brazil, causing a significant environmental impact. Given this, there is a need to recycle this waste, since this practice brings benefits to environmental, economic, and social environment. In line with this, it’s possible to identify a growing number of researches applying the incorporation of waste in the manufacture of soil-cement bricks, enabling more sustainable constructions. In this context, this research aims to evaluate the addition of recycled and crushed PET bottles (flake format) in the manufacture of ecological bricks, following the technical recommendations of NBR 8491 (ABNT, 2012) and NBR 10833 (ABNT, 2013). Thus, specimens were made with 0%, 10%, 15% and 20% of this residue (PET flake). These bricks, whose dimensions are: 200 x 100 x 50 mm. To analyze the results, soil characterization tests were executed: determination of organic impurities, granulometry and consistency limits. After the curing time, they were submitted to tests of water absorption, simple compressive strength and dimensional analysis. On its turn, the experimental results indicated that the soil is appropriate for making the soil-cement bricks, in terms of the conditions of water absorption and dimensional analysis, it was verified that they are in accordance with the technical requirements. However, they presented unsatisfactory values for compressive strength. Therefore, it is necessary to study the granulometric format of crushed PET for future researches and better results.