American Society of Civil Engineers


Water Quality of Drainage from Permeable Friction Course


by Bradley J. Eck, (corresponding author), M.ASCE, (Research Scientist, IBM Research, Dublin, Ireland; formerly, Postdoctoral fellow, Center for Research in Water Resources, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, PRC #119, 10100 Burnet Rd., Austin, TX 78758. E-mail: bradleyjeck@gmail.com), Ryan J. Winston, A.M.ASCE, (Extension Associate, Dept. of Biological and Agricultural Engineering, North Carolina State Univ., 3100 Faucette Dr., Raleigh, NC 27695-7625.), William F. Hunt, M.ASCE, (Associate Professor, Dept. of Biological and Agricultural Engineering, North Carolina State Univ., 3100 Faucette Dr., Raleigh, NC 27695-7625.), and Michael E. Barrett, M.ASCE, (Research Associate Professor, Center for Research in Water Resources, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, PRC #119, 10100 Burnet Rd., Austin, TX 78758.)

Journal of Environmental Engineering, Vol. 138, No. 2, February 2012, pp. 174-181, (doi:  http://dx.doi.org/10.1061/(ASCE)EE.1943-7870.0000476)

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Document type: Journal Paper
Abstract: An overlay of porous asphalt known as permeable friction course (PFC) is an innovative roadway material that improves both driving conditions in wet weather and water quality. Placed in a layer 25–50 mm thick on top of regular impermeable pavement, PFC allows rainfall to drain within the porous layer rather than on top of the pavement. This paper presents water quality measurements for PFC and conventional pavement collected over six years near Austin, TX and two years in eastern North Carolina. The data show that concentrations of total suspended solids from PFC are more than 90% lower than from conventional pavement. Lower effluent concentrations are also observed for total amounts of phosphorus, copper, lead, and zinc. The combined data sets show that PFC’s benefits last through the design life of the pavement, that results in Texas are consistent with those from North Carolina, and that both are consistent with earlier studies from France, the Netherlands, and Germany.


ASCE Subject Headings:
Highways and roads
Runoff
Monitoring
Friction
Stormwater management
Water quality
Drainage

Author Keywords:
Highway runoff
Field monitoring
Permeable friction course
Stormwater