Pervious

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Pervious concrete pavement is a unique and effective means to address important environmental issues and support green, sustainable growth.

The technology of Pervious concrete is achieved using carefully controlled amounts of water and cementitious materials to create a paste that forms a thick coating around aggregate particles. A pervious concrete mixture contains little or no sand, creating a substantial void content. Using sufficient paste to coat and bind the aggregate particles together creates a system of highly permeable, interconnected voids that drains quickly. Typically, between 15% and 25% voids are achieved in the hardened concrete, and flow rates for water through pervious concrete are typically around 480 in./hr (0.34 cm/s, which is 5 gal/ft²/ min or 200 L/m²/min), although they can be much higher. Both the low mortar content and high porosity also reduce strength compared to conventional concrete mixtures, but sufficient strength for many applications is readily achieved.

While pervious concrete can be used for a surprising number of applications, its primary use is in pavement. The addition of color and designer imprinting tools has enabled Bomanite to evolve this material from a traditional paving solution to a decorative option.