National Conference on Preservation, Repair, and Rehabilitation of Concrete Pavements St. Louis, Missouri April 22–24, 2009 Sponsored by: Federal Highway Administration and American Association of State Highway and Transportation Officials American Concrete Pavement Association (ACPA) Cement Association of Canada Chapter/State Division of ACPA International Grooving and Grinding Association International Society for Concrete Pavements Missouri Department of Transportation Missouri/Kansas Chapter of ACPA National Concrete Pavement Technology Center Portland Cement Association Transportation Research Board Concrete Pavements—Safer, Smoother, Longer Lasting