Influence of operational loads on the degradation of reinforced concrete of offshore structures
Abstract
Corrosion of reinforcement of marine and coastal hydrotechnical structures due to chloride aggression and carbonation of concrete leads to a sharp decrease in the safety of the structure. The reinforcement is subjected to a depassivation process as soon as the chloride content on its surface exceeds the threshold concentration, or the pH value in the protective layer of concrete decreases to the threshold value as a result of carbonation. When oxygen penetrates to the surface of the reinforcement, electrochemical reactions are realized with the formation of corrosion products. This leads to cracking the protective layer of concrete, reducing the cross-sectional area of the reinforcement. The paper proposes a method for predicting the complex degradation of reinforced concrete structures of coastal structures, taking into account various mechanisms of corrosion wear, which makes it possible to develop effective ways to increase the durability and maintainability of structures operated in the marine environment.
About the Authors
E. E. ShalyiS. N. Leonovich
Belarusian National Technical University; Qingdao University of Technology
Belarus
Belarus
Doctor of Sciences (Engineering), Foreign Academic of RAACS
e-mail: sleonovich@mail.ru
N. A. Budrevich
Belarusian National Technical University
Belarus
Belarus
Engineer
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For citations:
Shalyi E.E., Leonovich S.N., Budrevich N.A. Influence of operational loads on the degradation of reinforced concrete of offshore structures. Concrete and Reinforced Concrete. 2021;606(4):8-13. (In Russ.)
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