Durability Performance of a Structure Made with High-Performance Concrete and Prefabricated Elements in a Marine Environment

Moradian, Masoud; Chini, Mahdi; Shekarchi, Mohammad

doi:10.1061/(asce)cf.1943-5509.0000668

Cited by 11 publications

(1 citation statement)

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“…When the concentration of chloride ion on the reinforcing steel surface reached a threshold value called critical concentration, depassivation of reinforcing steel initiated and corrosion started to occur [5][6][7] . Chloride ingressed into concrete involved several transport processes such as diffusion (i.e., the motion of chloride ion within the pore solution caused by the concentration gradient), convection (i.e., the motion of chloride ion together with the pore solution within the concrete caused by the moisture gradient), capillary absorption and migration [8][9][10][11][12]. In this paper, finite element model was established to calculate corrosion initiation time.…”

Section: Introductionmentioning

confidence: 99%

Mechanism analysis and model calculation of chloride ion diffusion in reinforced concrete structure

Gao

2020

E3S Web Conf.

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Chloride-induced corrosion of steel in reinforced concrete structures is one of the major causes of their deterioration over time. The analysis and research on the diffusion mechanism of chloride ions in reinforced concrete structures is still insufficient, and it is necessary to calculate the path of chloride ions based on theoretical models. In this paper, the fick’s second law was used to describe the free chloride concentration evolution in concrete. The Monte Carlo simulation was used to predict the cumulative distribution of corrosion initiation of reinforcing steel.The results show that the calculated results of the established model are in good agreement with the measured results.

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