Geotextile to Improving Concrete Overlay Construction

Four ongoing construction projects in Iowa were selected to study ways to improve concrete overlay construction. Seven research objectives for improving concrete overlay construction were investigated across the four projects, including the installation of geotextiles for bond breakers. The study so far recommends using a geotextile bond breaker for unbonded concrete overlays; and when using them, reduce the potential for wind/traffic damage by installing the geotextile less than one day before paving. The April 2010 Tech Transfer Summary publication from the Iowa State University Institute for Transportation summarizes the project.