Inhibitor efficiency of migratory corrosion inhibitors to reduce corrosion in reinforced concrete exposed to high chloride environment

Goyal, Arpit; Ganjian, Eshmaiel; Pouya, Homayoon Sadeghi; Tyrer, Mark

doi:10.1016/j.conbuildmat.2021.124461

Cited by 43 publications

(23 citation statements)

References 13 publications

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“…Therefore, the non-linear behavior of the inhibition performance of the inhibitors with their concentration can be related to the complex phenomena occurred in the under-studied system. This nonlinear behavior for inhibitors has been previously observed in other studies of guar gum and other inhibitors [5,47].…”

Section: Polarization Analysissupporting

confidence: 81%

“…E corr is corrosion potential and i cor is corrosion current density. The corrosion inhibition (%IE) values are obtained using Equation (5).…”

Section: Polarization Analysismentioning

confidence: 99%

“…In recent years, increasing the life of reinforced concrete structures, particularly the marine structures, has been one of the main concerns of researchers and engineers in the construction industry [ 1 , 2 , 3 , 4 ]. To avoid the destruction of concrete structures the use of corrosion inhibitors has been widely demonstrated as an efficient technique [ 5 , 6 ]. Generally, the inhibitors are chemical materials which decrease the corrosion rate of concrete reinforcements without dramatically changing the concentration of corrosion agents [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Eco-Friendly Inhibitors on the Corrosion Properties of Concrete Reinforcement in Harsh Environments

et al. 2022

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In the present research, the synergistic effect of Arabic and guar gum inhibitors on the corrosion efficiency of concrete reinforcement was investigated. Thus, eight types of Arabic and guar gum combinations with 100, 250, 500, 750, and 1000 ppm were added to the steel reinforcement for 1, 7, 28, 48, and 72 days. The corrosion behavior of the samples was investigated by the electrochemical impedance (EIS) test. Water transmissibility, electrical resistivity, and compressive strength of concrete were also studied. The results showed that adding inhibitors generally increased the compressive strength of concrete. It was also found that water transmissibility was reduced by the addition of inhibitors. The electrical resistivity of the samples increased slightly with increasing time up to 72 days. EIS and Tafel results have demonstrated that Arabic and guar gums are effective inhibitors for reinforced concrete structures. Furthermore, scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) utilized to analyze the samples indicated that inhibitor grain size was enhanced by enhancing the concentration of the inhibitor combination, showing that the guar and Arabic inhibitor combinations were properly absorbed on the reinforcement surface. Results showed that a sample with 250 ppm Arabic gum and 250 ppm guar gum having a properly distributed inhibitor combination on the reinforcement surface creates a desirable cathode current.

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Section: Polarization Analysissupporting

confidence: 81%

“…E corr is corrosion potential and i cor is corrosion current density. The corrosion inhibition (%IE) values are obtained using Equation (5).…”

Section: Polarization Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of Eco-Friendly Inhibitors on the Corrosion Properties of Concrete Reinforcement in Harsh Environments

et al. 2022

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“…Moreover, the MCIs can be applied to both relatively young and hardened concrete structures [ 6 ]. The MCIs molecules can reach the steel bar surface through capillary infiltration and vapor diffusion, forming a compact layer to protect the steel bar from corrosion [ 2 , 12 ]. In addition, the pore-blocking effect on the concrete surface via MCIs coating can not only prevent the evaporation of the MCIs molecules from the concrete, but also reduce the penetration of aggressive ions [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers have conducted significant investigations on the anti-corrosion performance and mechanism of MCIs on steel bars under chloride erosion. The frequently-used MCIs are amine salts, amino-alcohol, and organo-functional-based inhibitors [ 12 , 15 ]. Studies have typically adopted two experiment methods, where the steel bars are immersed in a simulated concrete pore solution or embedded in cementitious materials.…”

Section: Introductionmentioning

confidence: 99%

Anti-Corrosion Performance of Migratory Corrosion Inhibitors on Reinforced Concrete Exposed to Varying Degrees of Chloride Erosion

Sun

Liu

et al. 2022

Materials

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This study investigated the anti-corrosion performance of commercial amino alcohol migratory corrosion inhibitors (MCIs) on concrete that underwent varying degrees of chloride erosion. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PD), scanning electron microscopy, and energy dispersive spectroscopy (SEM-EDS) analyses were performed to study the anti-corrosion performance and mechanism of the MCIs on the steel bars. The results indicated that the corrosion resistance of the steel bars in concrete was significantly improved by coating with the MCIs, and the earlier the specimens were coated with the MCIs, the higher the anti-corrosion efficiency. The anti-corrosion efficiency was 55.35% when the MCIs coating was applied before chloride erosion; however, the anti-corrosion efficiency decreased to 3.40% when the MCIs coating was applied after the ninth drying–wetting cycle. The improvement in corrosion resistance of the steel bar in concrete coated with MCIs was due to the protective MCIs-molecule film that formed on the steel bar surfaces, and the oxidative dissolution of iron at the anode was effectively inhibited by the MCIs coating.

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Inhibition Performance of Generic Compounds as Corrosion Inhibitor in Combined Chloride and Carbonation Environment

Tiwari,

Garhwal,

Garhwal

et al. 2023

Lecture Notes in Networks and Systems

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Inhibitor efficiency of migratory corrosion inhibitors to reduce corrosion in reinforced concrete exposed to high chloride environment

Cited by 43 publications

References 13 publications

The Effect of Eco-Friendly Inhibitors on the Corrosion Properties of Concrete Reinforcement in Harsh Environments

The Effect of Eco-Friendly Inhibitors on the Corrosion Properties of Concrete Reinforcement in Harsh Environments

Anti-Corrosion Performance of Migratory Corrosion Inhibitors on Reinforced Concrete Exposed to Varying Degrees of Chloride Erosion

Inhibition Performance of Generic Compounds as Corrosion Inhibitor in Combined Chloride and Carbonation Environment

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