Chemical corrosion of a bricklaying. Problem definition

In the conditions of increased requirements to resistance to heat transfer of the enclosing structures of modern buildings, the construction industry has almost completely switched to the use of multi-layered enclosing structures. However, the durability of materials, their corrosion resistance in normative documents is considered without taking into account their influence on each other in a single system of the enclosing construction structure. Describes a new approach to the study of the durability of brickwork, taking into account the course of chemical corrosion processes in a two-component chemical system of clay brick – cement-Sandy mortar. The assessment of frost resistance standardized in the standards does not provide an opportunity to assess the ultimate longevity of brickwork structures. Hence the theory of durability built on the assessment of frost resistance and cyclic freeze-thaw processes, leave a number of unresolved issues that are analyzed in this article. In addition, the article categorizes the processes of chemical corrosion occurring in multicomponent systems with the participation of building materials used in enclosing structures. This classification allows you to systematically approach the calculation of the rate of destructive chemical reactions, and therefore calculate the “life cycle” of the building structure as a whole.

D.YU. ZHELDAKOV, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Scientific-Research Institute of Building Physics of the Russian Academy architecture and construction sciences (21, Lokomotivniy Driveway, Moscow, 127238, Russian Federation)

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