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Pervious Concrete

by
Permeable Pavements Task Committee


Part of: Permeable Pavements

Abstract:

Pervious concrete consists of a hydraulic cementitious binding system combined with an open-graded aggregate to produce a rigid pavement with typically 15% to 25% interconnected void space. The ultimate goal is to create a durable wearing pavement surface that allows rapid infiltration of stormwater to the underlying soil or open-graded base aggregate layer. The clean aggregate layer typically has 40% compacted voids. Layer depth is determined based on hydrologic design, vehicle loading, and frost depth considerations. A depth of 30 cm (12 in.) minimum in freeze-thaw climates is typical. Pervious concrete blocks have been used since the mid-1800s in England for residential construction. Pervious concrete pavements were first used in the Pacific during World War II to help recharge aquifers on allied-occupied islands and for tank facilities in England.

Subject Headings: Pervious concrete | Concrete pavements | Aggregates | Voids | Vehicle loads | Residential construction | Concrete blocks

 

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