Infrared Thermography and the Delamtect: A Comparison of Methods for Locating and Measuring Delaminations

The Minnesota Department of Transportation (Mn/DOT), contracted with Donohue and Associates, Inc. of Sheboygan, Wisconsin to survey five bridge decks and approximately 79 lane miles of continuously reinforced concrete pavement (CRCP) and asphalt-overlaid jointed reinforced concrete pavement in Minnesota. All of the work was in the St. Paul-Minneapolis metropolitan area except for two bridge decks, located in Moose Lake and Cloquet. Several test sections were also surveyed with Mn/DOT's Delamtect for purposes of comparing the results produced by the two techniques.