On the Issue of Chemical Corrosion and Durability of Brick Masonry
Topical issues related to the durability and chemical corrosion of masonry at modern construction sites are discussed. Controversial issues presented in the articles by D.Yu. Zheldakov,according to the results of his research of chemical corrosion and durability of brick masonry are considered. The substantiation of resistance of ceramic brick to chemical corrosion,and also that for our climate the main property defining durability of products is frost resistance is made. A critical analysis of the brick - work destruction mechanism proposed by theauthor is presented, where the basis is the reaction between calcium hydroxide and silicon and aluminum oxides with the formation of wollastonite and mono - calcium aluminate. Theinconsistency of the conclusions made by the author that he has developed a mechanism for the destruction of bricks in the “brick - cement - sand mortar” system at positive temperaturesis shown. The method proposed by the author for calculating the ultimate durability of the structural material with respect to the strength parameter taking into account chemicalcorrosion processes, as well as the author’s main conclusion that when using multi - layer enclosing structures, their durability must not be determined for each material, but only takinginto account the chemical destruction processes under the mutual influence of all materials is questioned.