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Abstract
The article is devoted to the study of chloritization of cement concretes during corrosion in liquid aggressive media. With the help of mathematical models, chloride ion concentration profiles are constructed for the thickness of the concrete coating. The possibility of using mathematical models in the description of corrosion of the second type of cement concretes to determine the mass transfer indicators and calculate the corrosion rate of reinforcing steel in concrete is shown. The effect of hydrophobizing additives on the rate of chloride ion transfer through the concrete coating to the reinforcement surface is considered. A study was made of the chlorination of cement concretes taking into account the phenomenon of pore and capillary colmatation. Graphical dependences of the rate of chloride ions transport on the speed and degree of colmatation of pores and capillaries of concretes based on Portland cement during corrosion in liquid aggressive media are presented. Time intervals for the beginning of corrosion of steel reinforcement are established for the corrosion of reinforced concrete in liquid aggressive media containing chloride ions.
Published Version
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