Intervention time of porous asphalt mixture evaluation to prevent clogging

Porous pavements are considered an alternative to increasing the city's permeable surfaces with great potential for rainwater harvesting. Over time, the surface layer clogs, limiting porous pavement dissemination. This study aims to evaluate the maximum time for an intervention of a porous surface to recover its permeable properties before clogging. Through a constant load permeameter, rainwater runoff simulations were performed to measure the permeability coefficient of porous asphalt mixtures. Void content and void communication were also evaluated. The results show that the intervention by surface cleaning for the porous asphalt mixtures studied should occur every year.