Matrix/rebar rehabilitation through electrochemical injection of Ce(III)/imidazolium-based ILs as a novel anti-corrosion pore-blocking technique for increasing the sustainability of reinforced cementitious materials

Teymouri, Farshad; Allahkaram, Saeed Reza; Azamian, Iman; Johari, Milad; Samiei, Iman; Shekarchi, Mohammad

doi:10.1016/j.corsci.2022.110687

Cited by 3 publications

(2 citation statements)

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“…They used graphite-cement paste as a surface coating material for reinforced concrete structures, which not only serves as cathodic protection but also facilitates the migration of chlorides to the surface anode area (Carmona et al, 2015). Studies found that the injection of amino alcohol MCI or Ce ions into concrete leads to pore-blocking effect, increasing the resistance on steel corrosion (Shi et al, 2017;Teymouri et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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The inhibitor effect of migrating corrosion inhibitors on Q235 steel in high alkaline environment under cathodic polarization

Jia,

Gao,

et al. 2024

ACMM

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Purpose This study aims to investigate the corrosion inhibitor effect of migrating corrosion inhibitor (MCI) on Q235 steel in high alkaline environment under cathodic polarization. Design/methodology/approach This study investigated the electrochemical characteristics of Q235 steel with and without MCI by polarization curve and electrochemical impedance spectroscopy. Besides, the surface composition of Q235 steel under different environments was analyzed by X-ray photoelectron spectroscopy. In addition, the migration characteristic of MCI and the adsorption behavior of MCI under cathodic polarization were studied using Raman spectroscopy. Findings Diethanolamine (DEA) and N, N-dimethylethanolamine (DMEA) can inhibit the increase of Fe(II) in the oxide film of Q235 steel under cathodic polarization. The adsorption stability of DMEA film was higher under cathodic polarization potential, showing a higher corrosion inhibition ability. The corrosion inhibition mechanism of DEA and DMEA under cathodic polarization potential was proposed. Originality/value The MCI has a broad application prospect in the repair of damaged reinforced concrete due to its unique migratory characteristics. The interaction between MCIs, rebar and concrete with different compositions has been studied, but the passivation behavior of the steel interface in the presence of both the migrating electric field and corrosion inhibitors has been neglected. And it was investigated in this paper.

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Section: Introductionmentioning

confidence: 99%

“…Studies found that the injection of amino alcohol MCI or Ce ions into concrete leads to pore-blocking effect, increasing the resistance on steel corrosion (Shi et al. , 2017; Teymouri et al. , 2022).…”

Section: Introductionmentioning

confidence: 99%