Are Infiltration Capacities of Clogged Permeable Pavements Still Acceptable ? Les capacités d ' infiltration de revêtement poreux " colmatés " restent-elles acceptables ?

This study describes field investigations of the infiltration capacity of 18 permeable pavement systems installed in the Netherlands and in Australia. The ages of the pavements varied from 1 to 12 years. Using infiltrometer testing, the performance of the pavements have been compared in terms of their ability to infiltrate; a three month ARI storm event in the case of the Australian pavements; or the minimum European infiltration capacity of 97.2 mm/h for the Dutch pavements, assuming a 4:1 impermeable to permeable ratio for the catchment area. Many of the tested pavements broadly follow a hypothetical decay curve of infiltration rate with age of pavement. However, these are clustered into two distinct groups (Dutch and Australian) with the older Australian pavements appearing to maintain higher infiltration rates relative to their age. KEYWORDS