ABSTRACT
Nowadays, the knowledge and maintenance of constructions has become a highpriority task for private and public institutions, largely due to the development, economy and cultural heritage that these constructions represent. The prevention, rehabilitation and restoration processes in constructions involve, among other task, the pathological analysis and assessment of building materials. To this end, it is important to perform qualitative analysis in some particular areas of the structure under consideration such as X-ray inspections or petrographic tests. This information is then extrapolated to the rest of the construction surface. Taking into account the above, and within a non-intrusive context, this chapter aims to provide readers the theoretical information necessary to carry out the diagnosis of pathologies in constructions by multispectral analysis.
