Clogged pervious concrete has been difficult to open up efficiently. This article describes a new machine that makes it easier and compares how the machine works on a variety of permeable pavements.

"Since the 1990s, municipalities and private property owners constructed millions of square feet of pervious concrete (PC), porous asphalt (PA) and permeable interlocking concrete pavements (PICP) in parking lots, alleys and streets. The number one question is about maintenance. The next questions typically are how often should the surface be cleaned and with what equipment?"

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