Peter Zoni

Our concrete company on Cape Cod has installed pervious concrete for many projects over the years where drainage or the accumulation of surface water was an issue. At a local senior center, for example, we used pervious concrete for a walkway to keep it from collecting water. Poolside areas are a common application, and we have even installed pervious concrete for the floor of a greenhouse to drain away the overflow and overspray from watering the plants.

Pervious concrete is a mix of Portland cement, coarse aggregate, water, and admixtures. Because there is little or no sand in the mix, the concrete contains bigger voids than ordinary concrete does. These voids let water and air pass through, making pervious concrete a good choice anywhere you need to control runoff. In many cases, using...

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