The impact of salt pore clogging on the hygric properties of bricks

This paper presents an experimental analysis of the impact of salt pore clogging on the hygric properties of bricks, with a focus on CaSO4·2H2O and NaCl. The study includes the pore clogging induction and hygric property measurement. The former implies establishing an even distribution of salt crystals in the samples, whereas the latter is related to determination of the basic hygric properties. The experiments reveal that even a limited amount of pore clogging can already significantly affect the hygric properties of bricks. It is moreover shown that the impact of pore clogging is highly dependent on the salt type.