Combined effect of carbonation and chloride aggression: degradation of reinforced concrete structures

• Autorzy: Kim L. V. , Shalyi E. E. , Leonovich S. N. , Budrevich N. A.
• Języki publikacji: EN

Abstrakty

EN

Corrosion reinforcement marine hydraulic structures due to chloride aggression and carboniza-tion of concrete leads to a sharp decrease in the safety of the structure. The steel reinforcement will be subjected to a so-called depassivation process, once the chloride concentration on surface exceeds a certain threshold concentration, or the pH value in the protective layer of concrete de-creases to a threshold value due to carbonation. Electrochemical reactions begin to occur with the formation of corrosion products with the penetration of oxygen on the steel reinforcement surface. This leads to cracking of the protective layer of concrete. It should also be taken into account that, due to corrosion mechanisms, the cross-sectional area of the reinforcement also decreases. The article suggests a method for predicting the complex degradation of reinforced concrete structures, taking into account various mechanisms of corrosion wear, which will allow developing effective ways to improve the durability and maintainability of structures operated in the marine environment.

Słowa kluczowe

EN

structure; concrete; corrosion; carbonation; chloride aggression

PL

struktura; korozja; agresja chlorkowa; beton

• Wydawca: Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
• Czasopismo: Inżynieria Bezpieczeństwa Obiektów Antropogenicznych
• Rocznik: 2018
• Tom: Nr 3-4
• Strony: 78--86
• Opis fizyczny: Bibliogr. 24 poz., wykr., tab., rys.

Twórcy

autor

Kim L. V.

• Far Eastern Federal University (Vladivostok, Russia)

autor

Shalyi E. E.

• Far Eastern Federal University (Vladivostok, Russia)

autor

Leonovich S. N.

• Belarussian national technical university (Minsk, Republic of Belarus)

autor

Budrevich N. A.

• Belarussian national technical university (Minsk, Republic of Belarus)

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).