Dynamics of salt crystallization

J. Desarnaud, F. Bertrand & N. Shahidzadeh-Bonn
We study the impact of the recrystallization dynamics on damage of sandstone duringwetting/drying and humidity cycling for NaCl and compare with the case of Na2SO4. Theseresults reveal the major role of the crystallization dynamics in the way different salts causedamage under different environmental conditions. For sodium chloride, damage on PragueSandstone is found to occur rather during humidity cycling than rewetting/ drying cycles. Weshow for the first time that deliquescence/recrystallization with humidity cycling leads to thegrowth...