Abstract
Recently, infrared thermography measurement is focused as a effective and economical method of maintenance and management for structures because more and more structures are aging. In-situ application of the measurement has been increasing year by year in civil engineering and there are many researches on influence of measuring environment. However, it is important not only to detect spalling area but also estimate risk of spalling for selecting effective repair method. In this study, in order to estimate risk of spalling crack, infrared thermography measurement was carried out for specimen damaged by experiment simulating reinforcement corrosion. As a result, we suggest spalling risk as an effective index which isn't influenced by cover thickness or failure pattern, and clarify that it is possible to predict time to spalling by measuring thermal temperature.
