Concreto permeável: Análise de desempenho voltada para pavimentação, a fim de combater inundações em centros urbanos

Abstract

Permeable concrete is a type of material that allows water to seep through its entire length or through its joints. At the same time that water is percolated, the quality standards established by ABNT NBR 16416 (2015) must be maintained, which aims to regularize all processes and Brazilian Journal of Development Braz. J. of Develop., Curitiba, v. 6, n. 4, p. 18300-18320, apr. 2020. ISSN 2525-8761 18301 requirements of porous concrete floors. In addition, the recommendations established by ACI211.3R-02 (2009) for dosing methods must be followed, enabling the achievement of adequate traces. This study has two basic and primordial variables, which are: the content of aggregates (m) and the water / cement ratio (a / c). In dosage methods, these two premises were studied in order to guarantee the best relationship between both, in order to achieve the final objective, the permeability / resistance ratio. It is justified because it is a technology that emerges as a combat to floods brought by the urbanization process of cities. Given the above, this work aims to develop an experimental study, where the focus is to analyze the performance of permeable concrete, seeking to prove that it can be an effective alternative to fight flooding. Part of a bibliographic search with the revision through books, articles, monographic works and norms. The results obtained showed resistance below 10 MPa at 28 days. However, they are within the normal range mentioned by ACI 522R: 06 (2006), with permeable concretes ranging from 2.8 to 28 Mpa. Regarding the permeability tests, it was noted that the porous concrete reached the expected aspects, percolating with precipitated water in a short period of time.