Application of infrared thermography and geophysical methods for defect detection in architectural structures

The scope of the present study was a multi-methodological approach to non-destructive evaluation of architectural structures. Three different techniques such as infrared thermography, ultrasonics and electric-type geophysical methods were analysed to acquire information for a synergic use of the different methods, which may be useful for estimation of buildings degradation sources. The investigation was carried out in laboratory by considering specimens, which were made of a plaster layer over a support of marble, brick, or tuff to simulate masonry structures. Air bubbles were intentionally created inside specimens to simulate detachments. Examples of in-situ applications are also reported. In particular, infrared thermography was used for inspection of the status of tiles covering the walls of a building.