TRANSIENT THERMOGRAPHY FOR NON-DESTRUCTIVE INVESTIGATION OF BUILDING STRUCTURES IN THE NEAR SURFACE REGION

摘要

The cooling down process of building structures after heating up with an external radiation source was analysed to detect voids inside and below the surface of a concrete test specimen containing voids with different sizes at various depth or covered with carbon fibre reinforcing laminates. These experimental investigations were compared to the results of simulations performed with a Finite Difference program.