Estudo da dosagem de concreto permeável para pavimento com materiais do alto sertão alagoano

Abstract

Currently, there is no consolidated methodology that allows the determination of the amount of materials needed to obtain the mechanical and hydraulic properties of permeable concrete. This fact limits the application of this type of concrete in civil construction works. In addition, the most used methodologies for concrete dosage are based on tests and reproduction of previous experiments. In this study, the main objective was to calculate an adequate dosage using materials from the backlands of Alagoas. The dosage method was considered according to the American Concrete Institute (ACI) standard. This method was used to create two concrete recipes with porosities of 15% and 20%, respectively. Flexural strength test was adapted due to the lack of suitable instruments in the laboratory. The values found, considering a porosity of 20%, of 4.74 MPa. Permeability reached a value higher than expected, despite complications during the test. In this way, the materials used together with the dosage of porous concrete brought positive results in general.