Characterization of Infiltration Capacity of Permeable Pavements with Porous Asphalt Surface Using Cantabrian Fixed Infiltrometer

Abstract

Porous asphalt is used in Permeable Pavement Systems (PPS), but it is sensitive to surface clogging leading to a loss in its infiltration capacity. Test methods based on the use of permeable pavement models, manufactured in laboratory and assessed under different clogging conditions, slope, rain and runoff, have been widely applied to the study of permeable pavements with concrete blocks but not to the study of porous bituminous mixtures. The Cantabrian Fixed (CF) Infiltrometer has been used for the study of porous asphalt with void percentages between 20% and 33%. Three clogging scenarios were studied: newly placed surface, surface with an average maintenance level and clogged surface. Each clogging scenario was tested with 5 different slopes: 0%, 2%, 5%, 8% and 10% and three repetitions. The direct rainfall simulation was produced by five lines of bubblers over the 0.25m 2 piece and the runoff was simulated by one perforated pipe over a plastic ramp at the beginning of the surface. From the analysis of the results, it was concluded that a suitable design of a porous bituminous mixture, with a void percentage that increases with depth, along with surface brushing are enough to ensure and maintain a good infiltration capacity. Finally, an empirical conservative model for estimating the porous asphalt infiltration capacity based on the length, the clogging scenario, and the surface slope, is proposed.

A Review of Permeable Pavement Clogging Investigations and Recommended Maintenance Regimes

“…This could be because water moves laterally when the ASTM method used. A Cantabrian Fixed (CF) Infiltrometer was used in a study of porous asphalt clogging with void ratios of between 20% and 33% [24]. Multiple scenarios of clogging with various pavement slopes were tested in this study.…”

Sustainable Drainage Practices in Spain, Specially Focused on Pervious Pavements

“…Later, in order to complete this information, Rodriguez-Hernandez et al [52], using the same test apparatus, evaluated the infiltration capacity of a porous asphalt mixture under different clogged conditions and slopes (Figure 4) concluding that a suitable design of a porous bituminous mixture, with a void percentage that increases with depth, along with surface brushing are enough to ensure and maintain a good infiltration capacity. They provided three regression models corresponding to three clogging scenarios that explain the behavior.…”

Laboratory Assessment of the Infiltration Capacity Reduction in Clogged Porous Mixture Surfaces

“…These systems aim to mimic the natural processes by which natural environments deal with stormwater. Permeable Pavement Systems (PPS) are one of the most extensively researched BMP/SuDS techniques because of their well-proven performance in reducing runoff volumes and their pollutant removal efficiency [6][7][8][9]. These systems are principally composed of several layers of pervious materials that allow the water to infiltrate whilst retaining the pollutants deposited on their surface, which have been transported by urban runoff.…”

“…Some researchers have attempted to use rainfall simulators in the search for methods that help to measure the infiltration capacity of permeable surfaces in a more realistic way and under more accurate conditions. Laboratory experimental devices were developed for obtaining the infiltration capacity on a small, medium, and full-scale by Rodriguez-Hernandez et al [7], Sañudo-Fontaneda et al [9], Rodriguez-Hernandez et al [1], and portable devices for field analysis by Fernandez-Barrera et al [15] and Nichols et al [16], amongst others.…”