Porous Pavement for the Control of Highway Runoff (Construction)

摘要

A three lane by 3500 linear feet portion of an urban highway was constructed of porous pavement. This design resulted from a research study of the use of porous pavement to provide highway drainage. The roadway utilized open-graded layers of asphalt concrete, asphalt treated base and untreated aggregate subbase. A filter fabric was placed for separation of the subbase and subgrade. The free draining pavement layers drain into a trench at the edge of the pavement. The drainage trench is filled with open-graded aggregate. Construction procedures and problems are discussed along with initial performance indications.