Effectiveness of amino alcohol-based surface-applied corrosion inhibitors in chloride-contaminated concrete

Söylev, T.A.; McNally, Ciarán; Richardson, Mark G.

doi:10.1016/j.cemconres.2007.03.010

Cited by 54 publications

(29 citation statements)

References 12 publications

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“…Therefore, the low values of CC obtained from the P. muellerianus admixed concretes also corroborate the low values of CP by the low CC values indicating low measure of corrosion activity between the steel-rebar in the concrete and the Cu in the reference electrode employed for this electrochemical test. [18,67].…”

Section: Statistical Distribution Fitting and Analyses Of Corrosion Tmentioning

confidence: 99%

“…However, the few over-predictions and discrepancies in model of corrosion test-variables necessitate investigation of the distribution that describes the scatter of the test-data from each corrosion test-variable better among the Normal and the Weibull distribution models. [18,67].…”

Section: Statistical Distribution Fitting and Analyses Of Corrosion Tmentioning

confidence: 99%

“…The mean plots of corrosion potential and corrosion current, Figure 1a,b, also include the range of standard deviations for each of the datasets of these corrosion test-variables for each steel-reinforced concrete samples. In addition, and for aiding direct interpretations from the plotting, the plots of corrosion potential (Figure 1a) include linear plots of corrosion risk probability as per ASTM C876-91 R99 [45] while the plots of corrosion rate ( Figure 1c) include a linear plot of typical corrosion rate criteria from literature [18,67].…”

Section: Adsorption Isotherm Modelingmentioning

confidence: 99%

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Effects of Phyllanthus muellerianus Leaf-Extract on Steel-Reinforcement Corrosion in 3.5% NaCl-Immersed Concrete

Okeniyi

Loto

Popoola

2016

Metals

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This paper investigates Phyllanthus muellerianus leaf-extract effects on steel-reinforcement corrosion in concrete immersed in 3.5% NaCl, simulating saline/marine environment. Different concentrations of the leaf-extract were admixed in steel-reinforced concrete samples, which were immersed, with normal control, in the test-environment, while positive control samples were immersed in distilled water. Electrochemical measurements of corrosion-rate (by linear-polarizationresistance instrument), corrosion-current (by zero-resistance-ammeter) and corrosion-potential (by high impedance multimeter) were obtained for assessing the reinforcing-steel corrosion. Analyzed results showed that the corrosion-rate exhibited excellent correlation (R = 98.82%, Nash-Sutcliffe Efficiency = 97.66%, ANOVA p-value = 0.0006) with function of the admixture concentration and of the corrosion noise-resistance (ratio of corrosion-potential and corrosion-current standard deviations). The 0.3333% Phyllanthus muellerianus (per weight of cement) exhibited optimal efficiency, η = 97.58% ± 1.28% (experimental) or 95.33% ± 4.25% (predicted), at inhibiting concrete steel-reinforcement corrosion in the test-environment, which compares well with the positive control performance model, η = 97.96% ± 0.03%. The experimental and predicted models followed the Langmuir adsorption isotherm, which indicated physisorption as the Phyllanthus muellerianus leaf-extract adsorption mechanism on the reinforcing-steel. These support suitability of the N-, S-, and O-containing and π-electron rich Phyllanthus muellerianus leaf-extract as an environmentally-friendly inhibitor for effective corrosion-protection of steel-reinforcement in concrete designed for the saline/marine environment.

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Section: Statistical Distribution Fitting and Analyses Of Corrosion Tmentioning

confidence: 99%

Section: Statistical Distribution Fitting and Analyses Of Corrosion Tmentioning

confidence: 99%

Section: Adsorption Isotherm Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Phyllanthus muellerianus Leaf-Extract on Steel-Reinforcement Corrosion in 3.5% NaCl-Immersed Concrete

Okeniyi

Loto

Popoola

2016

Metals

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“…Amino alcohol compounds are frequently used as organic corrosion inhibitors due to their high solubility (easy application) and their low toxicity; they can be more effective when the corrosion degree is relatively low or before the corrosion initiation phase of metal [11]. It is reported that the inhibiting action of this compounds is due to the adsorption and/or formation of physical barrier on the metal/solution interface [12,13].…”

Section: Introductionmentioning

confidence: 99%

Inhibitive effect of N,N'-Dimethylaminoethanol on carbon steel corrosion in neutral sodium chloride solution, at different temperatures

et al. 2018

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Abstract. The inhibition of carbon steel corrosion in neutral sodium chloride solution by N,N'-Dimethylaminoethanol (DMEA), at different temperatures, was investigated using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The results obtained confirm that DMEA is a good organic corrosion inhibitor for carbon steel in 0.5M of NaCl (concentration encountered in the Mediterranean seawater), over the whole range of temperatures studied. The inhibition efficiency (IE%) increases with increasing DMEA concentration; it reaches highest value for a concentration around 0.125 mol.L -1 . Potentiodynamic polarization data show that, the compound studied in this research predominantly act as anodic-type inhibitor. The EIS study reveals that the addition of DMEA decreases the corrosion rate of carbon steel in neutral sodium chloride solution, due to the fact that the inhibitor molecules are strongly adsorbed on the active sites following Langmuir isotherm, thus leading to the formation of a stable protective film on the steel surface which is able to keep the metal/solution interface in a passive state. Furthermore, the values of the activation parameters, i.e. ΔHa and Ea obtained in this study indicate that the adsorption process of DMEA is endothermic and could be mainly attributed to chemisorption, respectively.

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“…Apart from admixed inhibitors, surface applied inhibitors also gained popularity during the past 15 years. Wombacher et al 2004;Malik et al 2004;Holloway et al 2004;Soylev et al 2007 andJamil et al 2004 investigated the effectiveness of surface applied inhibitors in chloride induced corrosion. Most of the previous studies investigating the performance of surface applied organic inhibitors focused on chloride induced corrosion.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Impedance Spectroscopy to Study the Carbonation Behavior of Concrete Treated with Corrosion Inhibitors

Kaur

Goyal

Bhattacharjee

et al. 2017

ACT

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In this paper, electrochemical impedance spectroscopy was used as non destructive technique (NDT) for studying the carbonation behavior of the concrete sample treated with migratory type of organic corrosion inhibitors. Concrete carbonation was achieved in carbonation chamber by maintaining 5% CO 2 by volume, 60-70% relative humidity and 30 ± 2°C temperature for 90 days. The experimental results show that with progressive carbonation, porosity of the concrete reduces and results in denser microstructure. The concrete surface treated with corrosion inhibitor C.I. 1 (amine -ether based) and C.I. 2 (2-aminobenzoic acid) shows the behaviour different form the control sample at the end of exposure conditions. Impedance results indicate that carbonation depth can be predicted by analyzing the high frequency arc of Nyquist plot. Also, both of the tested inhibitors were able to form a passive layer around the rebar surface and their efficiencies improved with time.

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Effectiveness of amino alcohol-based surface-applied corrosion inhibitors in chloride-contaminated concrete

Cited by 54 publications

References 12 publications

Effects of Phyllanthus muellerianus Leaf-Extract on Steel-Reinforcement Corrosion in 3.5% NaCl-Immersed Concrete

Effects of Phyllanthus muellerianus Leaf-Extract on Steel-Reinforcement Corrosion in 3.5% NaCl-Immersed Concrete

Inhibitive effect of N,N'-Dimethylaminoethanol on carbon steel corrosion in neutral sodium chloride solution, at different temperatures

Electrochemical Impedance Spectroscopy to Study the Carbonation Behavior of Concrete Treated with Corrosion Inhibitors

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