Mathematical modeling of the infiltration in a permeable pavement on the field scale

Abstract

Permeable pavement (PP) is an alternative for the management of urban rainwater that allows the reduction of effective precipitation through the infiltration process. In this study was evaluated the infiltration capacity of a PP of hollow concrete blocks in a parking lot of the Federal University of Pernambuco. The hydraulic characterization and the infiltration capacity were analyzed in real scale, using a simple ring infiltrometer of 100 cm in diameter through the Beerkan method. Infiltration tests were carried out at twelve points of the PP. The BEST algorithm was applied in it Best-Intercept and Best-Slope version, to estimate the hydraulic parameters of the van Genutchen and Brooks and Corey equations for the retention and hydraulic conductivity of the PP surface. The values of saturated hydraulic conductivity determined by the BEST Intercept method were higher than those obtained by BEST Slope. The sorptivity values estimated by BEST Slope and Intercept were similar, with BEST Slope values slightly higher. Moderate infiltration variability was observed on the PP surface, as well as within the same type of texture. The Beerkan method proved to be adaptable to measure, in field scale, the three-dimensional infiltration in the PP covering layer.

Estimation of the Hydrodynamic Parameters of Soils Subjected to Water Scarcity: Application of BEST and Introduction of a Specific Methodology

“…Regarding Sandy Loam and Loamy Sand soils, BEST-intercept estimates were higher than BEST-Slope's. Other authors such as [12] and [13] also presented similar results for these types of soil. [14], while performing infiltration tests on transparent acrylic columns, using the same soils from Sicily used by [9], have observed that BEST-slope presented plausible results of saturated hydraulic conductivity (K s ) in only 57% of the tests, while BEST-intercept had positive K s values in all infiltration tests, without exception.…”

Effect of the choice of different methods on the permeable pavement hydraulic characterization and hydrological classification

“…These may consist of construction works, structures, and devices that facilitate the infiltration and percolation of water in the soil, restricting the runoff water infiltration into the drainage network, or that temporarily store runoff water. Among the most commonly known compensatory techniques used in Brazil, we find the infiltration systems, the infiltration wells and trenches, the detention basins, the green roofs, and the permeable pavements (Canholi, 2015;Costa et al, 2020;Marinho et al, 2020).…”