Eficiência de drenagem de um modelo de pavimento de concreto permeável sob precipitação natural

Abstract

The growth of the cities brings the construction of houses, paved streets, sidewalks and several other impermeable buildings on the soil. Thus, the urbanization it has as a consequence a greater rainwater surface runoff. Faced with this problem, it is necessary to find practices that improve the urban drainage operation. The present pader aims to evaluate the drainage efficiency of a permeable concrete pavement model subject natural precipitation. In order to do this, the production of permeable concrete was required, evaluating its flexural tensile strength and permeability. In sequence, a permeable pavement model was built, being must for its construction the dimensioning of the base layer and laying. This model made it possible to collect the surface runoff generated and thus, by relating these data to natural precipitation, it was possible to calculate the runoff coefficient of the permeable pavement. It was also determined the permeability coefficient of the permeable pavement, which presented a value of 1,5.10-2 m/s. The results of flexural tensile strength and concrete permeability coefficient were 1,72 MPa and 1,8.10-2 m/s. The runoff coefficient average was 0,024. Therefore, this work shows the efficiency of the permeable concrete pavement model in reducing surface runoff, since it is correctly sized for its applicability.