What Is It?
Permeable pavement, which is also referred to as porous or pervious concrete, is a type of pavement that allows rainwater to pass through it into the ground as a result of its highly porous composition.
What Does It Do?
The porosity of pervious concrete reduces runoff, which helps to manage stormwater and lessen the risk of flooding. Pervious concrete also returns water to underground aquifers while trapping suspended solids and pollutants and preventing them from infiltrating water streams.
How Else Is It Used?
Pervious concrete has many uses, including in parking lots, low-water bridges, well linings, low-volume pavements, sidewalks, patios, swimming pool decks, and residential roads and driveways.
You can use permeable pavement for a road on your property, especially if it’s prone to flooding after heavy rains. Imagine a swimming pool deck that isn’t slick with puddles as the kids splash all day.
How Much Does It Cost?
The cost of permeable pavement can range from $5 to $10 per square foot, depending on the type of material you use. Your pavement can be constructed to hold from 5 to 19 gallons of rainwater per minute.
Where Did It Come From?
Pervious concrete has been in use in the U.S. for more than 50 years. In the 1960s the concept was introduced in an effort to reduce floods, raise water tables, and renew aquifers. Ten years later the Environmental Protection Agency (EPA) began testing it to determine its cost and efficiency.
The origin of pervious concrete traces back to the 1800s when it was first seen in Europe, and the material was used for a variety of structural purposes, like pavement surfacing, and for infill panels and load-bearing walls. After World War II it returned to popularity overseas because cement became scarce.
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