Hydrophobe V edition:5 location:Brussels date:15-16 April 2008
This paper presents the results of drying experiments on hydrophobised calcium-silicate (calsilb) beams in order to validate theoretical models describing salt transport and salt crystallization. Experimental data include results from moisture transport as well as deformation measurements of the beams. X-ray analysis is used to determine the moisture transport, SEM and EDX to localize and analyze the salt crystals. Recently, a crystallization model was developed by Coussy  and is validated by the performed experiments. These also validate the poromechanical interpretation of the mechanical behaviour of the beams when influenced by the presence of moisture and salt crystals. A good agreement between measurements and modelling is obtained.