# Study of water diffusion in porous media by different non-destructive techniques.

Melada J., Arosio P., Gallo S., Gargano M., Veronese I., Ludwig N.

Comunicazione
VI - Fisica applicata, acceleratori e beni culturali
GSSI Ex ISEF - Aula A - Lunedì 23 h 15:00 - 19:00
Water presence inside porous media affects building materials due to many mechanisms, $e.g.$ salt crystallization and freeze-thaw cycles. In cultural heritage diagnostic non-destructive methods must be studied in order to develop new techniques for the $in situ$ measurement of both water content and water exchanges between materials and environment. We studied with NMR relaxometry, infrared thermography, infrared reflectance and gravimetric measurements different types of building materials. Our main goal is to determine the influence of different physico-chemical properties of the porous media on the water distribution inside pores to better understand the process of evaporation.