This study tries to assess the relative importance of the chemical corrosion of the silicoaluminate brick matrix by concentrated sodium chloride solutions. From the laboratory data obtained and the examination of actual specimens of deteriorated brick from Venice, where this type of chemical attack can be expected, it is concluded that the effect of chemical corrosion is negligible compared to the mechanical damage produced by salt crystallizing in the pores of the brick. See also AATA 16-1622.