Pervious Concrete

Pervious concrete is a special type of high porosity concrete used where applications require water from precipitation and other sources to pass directly through. It helps reduce runoff from a site and allows groundwater recharge.

The high porosity of pervious concrete is attained by a highly interconnected void content. Typically, it has little or no fine aggregate and has just enough cementitious paste to coat the coarse aggregate particles while preserving the interconnectivity of the voids.

Pervious concrete is traditionally used in parking and light traffic areas, residential streets, pedestrian walkways, and greenhouses. It is an important application for sustainable construction and is one of many low impact development techniques used by builders to protect water quality.

Environmental benefits:

• Reduces stormwater runoff

• Meets LEED® requirements for reducing stormwater runoff

• Protects streams and lakes

• Allows water and oxygen to reach tree roots

• Replenishes aquifers

• BMP for meeting EPA Phase II storm water regulations

• Cleans stormwater

• Meets LEED® requirements for reducing urban heat islands