, Former Professor, Civil, Environmental and Geo-Engineering
Over the past five years, there have been many pervious concrete projects in Minnesota. The majority of studies on pervious concrete have concentrated on the analysis of laboratory specimens without significant examination of field performance, and most of these studies have also not taken a comprehensive approach to evaluating the hydraulic and structural performance, or the durability, of pervious concrete pavement. The goal of this project was to determine performance criteria for materials, design methods, and construction of pervious concrete pavement. Researchers combined field analyses of existing, local pervious concrete installations, including an instrumented, three-year-old installation at the MnROAD facility in Albertville, Minnesota, with an evaluation of the microstructure of new mix designs. Researchers also validated a novel method for assessing the role of void structure in resisting clogging and reduced permeability and evaluated the effectiveness of cleaning methods.