Infrared thermography is used to detect the differences of temperature fields between concrete with inner defects and without defects. The accuracy of the inspection for on-site monitoring is affected by weather conditions. This study develops a combination method of infrared…
Infrared thermography is used to detect the differences of temperature fields between concrete with inner defects and without defects. The accuracy of the inspection for on-site monitoring is affected by weather conditions. This study develops a combination method of infrared thermography and a heat balance simulation based on meteorological data for non- destructive detection of concrete defects. In experimental procedures, two kinds of concrete samples were set to non-defect concrete and artificial defect concrete. These samples were used to conduct a passive test. In analytical procedures, the heat balance simulation calculates concrete surface temperatures from meteorological data. Temperatures inside concrete is obtained from the numerical solution of the one-dimensional heat conduction equation. As a result, The infrared thermography and the heat balance simulation can detect the differences in surface temperatures between non-defect and artificial defect samples.