When impervious surfaces for phosphorus export treatment is required and conventional measures of wet or infiltration ponds or forested buffers, takes its toll on available upland resources, Saint Joseph’s College turned to Sebago Technics for guidance. One option that was cost-effective and a reasonable selection for the design application, was to use Porous Asphalt.

See how Grondin Construction, Dayton Sand and Gravel and Allied Cook Construction worked together to accomplish this mission.

For conceptual design of the HMA structure we turned to the University of New Hampshire Storm Water Center for guidance. Due to low traffic yield and Bitumar’s overall strong rheological qualities we opted against a polymer modified product and chose more traditional methods of design. The result was a gap-graded backbone combined with a stock PGAB 64-28 mixed with Road Cell™ cellulose fiber for effective binder drain down absorption. The product was applied in two consecutive days. It was evident that superior service and performance by a liquid asphalt supplier was needed for successful completion of this project. We would like to thank Bitumar for playing that role and for providing the continued reassurance we need to help our customers meet their needs. We are hopeful with a detailed maintenance plan the project will be a measure for future applications in and around the greater area of Portland, Maine.

Trevor Kraus, Senior Quality Manager, Dayton Sand & Gravel Co., Inc.

To read more about the project, Project - Porous Pavement.

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