Monitoring in situ performance of pervious concrete in British Columbia—A pilot study

Modern day infrastructure calls for use of impervious surfaces and curb and gutter systems on pavements to rapidly collect and transport rain runoff. Due to this stormwater reaches the receiving water bodies rapidly, in greater volume and carries more pollutants than natural conditions. Porous pavement on parking lots, sidewalks, and driveways provides a solution to this problem. One such material that can be used to produce porous surfaces is pervious concrete. Even though no-fines concrete mix has been used for many years, there are still many outstanding issues related to its structural performance and issues with reduced percolation capacity over time especially when exposed to real conditions. This paper presents a case study describing a project in British Columbia, Canada where 1000 ft2 of asphalt was replaced with a pervious concrete system. The details of the unique construction technique including details of the material used are described in this paper. On-going tests to monitor the performance of this test slab are also described.