ABSTRACT
ABSTRACT: The proposed quality system for near surface structural rehabilitation measures of concrete bridges uses active thermography. The transient temperature development during the cooling down process is recorded with an infrared camera and visualizes damages. Validation tests on specimens with defined failures confirmed the accuracy of the procedure. Active thermography, amended by computer simulation, is appropriate to detect both, defects caused during CFRPapplication or in-service damages. The procedure for heating the inspected surface was optimized and the measurement procedure was automated during the project Sustainable Bridges. The set-up of a thermography-prototype was tested in four-point bending test.
