Porous Concrete offers an aesthetic alternative to Porous Asphalt while providing the same stormwater infiltration benefit. Cahill Associates has used Porous Concrete with Subsurface Infiltration /Storage Beds in both parking areas and sidewalks and walkways. Like the Porous Asphalt, Porous Concrete has performed well in cold weather climates. Because asphalt is less expensive, it remains our first choice for parking lots, but the porous concrete provides a good alternative where asphalt is not appropriate.
At the University of North Carolina at Chapel Hill, two large commuter parking lots have recently been installed using a combination of Porous Asphalt and Porous Concrete. The University was specifically interested in comparing the installation and performance of both asphalt and concrete in a southern climate, but was also driven by a University commitment to manage stormwater for both volume and quality.
At the Pennsylvania State University/Centre County Visitor Center, Porous Concrete was utilized in the construction of new sidewalks.
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