Corrosion resistance of chromium‐steel and stainless steel reinforcement in concrete

Fahim, Andrew; Dean, Alyson E.; Thomas, M D; Moffatt, Edward G.

doi:10.1002/maco.201709942

Cited by 37 publications

(13 citation statements)

References 46 publications

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“…[ 17 ] A manganese‐containing stainless steel XM‐28 (with 18% Mn but without molybdenum) was found less corrosion‐resistant compared to 304 or 316LN stainless steels. [ 18 ]…”

Section: Introductionmentioning

confidence: 99%

Stainless steels: Passive film composition, pitting potentials, and critical chloride content in concrete

Elsener

Fantauzzi

Rossi

2020

Materials & Corrosion

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Stainless steel reinforcing bars show excellent corrosion resistance in concrete structures exposed to harsh environments. Only a little information on the surface chemistry of these materials in alkaline media is available. This study reports the X-ray photoelectron spectroscopy surface analytical results (thickness, composition of the passive film and of the interface beneath the film) obtained on black steel, FeCr alloys, DIN 1.4301, DIN 1.4462 and the nickel-free DIN 1.4456 after exposure to alkaline solutions simulating concrete. The pitting potentials of the steels could be related to the Cr(III)oxy-hydroxide and Mo(VI) content in the passive film. C crit , the critical chloride content for corrosion initiation in concrete, necessary for life-time predictions, can be determined only with time-consuming tests, especially for high-alloyed stainless steel. This study reports a correlation between C crit in concrete (made with CEM II-A/LL and CEM I) and the pitting potential for carbon steel, Fe12%Cr alloy, DIN 1.4301, and DIN 1.4571 stainless steels. This could allow, for the first time, a quantitative estimation of C crit for stainless steel in concrete based on short-term solution tests. K E Y W O R D Scritical chloride content, pitting, stainless steels, XPS surface analysis, reinforced concrete

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“…[ 17 ] A manganese‐containing stainless steel XM‐28 (with 18% Mn but without molybdenum) was found less corrosion‐resistant compared to 304 or 316LN stainless steels. [ 18 ]…”

Section: Introductionmentioning

confidence: 99%

Stainless steels: Passive film composition, pitting potentials, and critical chloride content in concrete

Elsener

Fantauzzi

Rossi

2020

Materials & Corrosion

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“…The chemical method means to judge the corrosion status of steel bars indirectly according to the content of chemical composition in concrete protective layer (PH value of pore fluid, chloride ion content on steel bar surface, etc.) [ 30 ]. However, the chemical method is required to destroy the structure, and the location, speed, and state of corrosion cannot be determined.…”

Section: Introductionmentioning

confidence: 99%

Steel Corrosion Evaluation of Basalt Fiber RPC Affected by Crack and Steel-Concrete Interface Damage Using Electrochemical Methods

Liu¹,

Lyu²,

Zhang³

et al. 2020

Sensors

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Basalt fiber (BF) is a new anti-corrosion and environmentally friendly material, which is expected to delay the corrosion process of steel bars and improve the durability of reinforced reactive powder concrete (RPC). The electrochemical method is a nondestructive testing and real-time monitoring technique used to characterize the corrosion behaviors of steel bars embedded in concrete structures. In this paper, the electrochemical technique was employed to evaluate the corrosion of steel bars embedded in basalt fiber modified reactive powder concrete (BFRPC). Besides, crack and steel-concrete interface damage (SCID) were considered as typical factors that affect steel corrosion in concrete. Thus, both reinforced fiber-free RPC and BFRPC specimens with crack and SCID were prepared for evaluating the steel corrosion behaviors by electrochemical methods. The results revealed that both crack and SCID would aggravate the steel corrosion, and the crack was the major factor that affects the corrosion process. Moreover, the excellent compactness of BFRPC and the bridging action of BF could effectively prevent the concrete cracking and steel corrosion process of concrete. Using reinforced BFRPC instead of ordinary concrete in practical projects could greatly extend the service life of steel bars.

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“…However, the presence of Cr and Mo at 5% and 0.4% composition within this steel offers improved corrosion resistance compared to the traditional carbon steels [5][6][7]. The limited presence of chromium causes the formation of passive protective film against the attack of corrosive anions while Mo offers improved resistance to localized corrosion especially pitting [8][9][10][11][12]. In addition to this, use of chemical compounds known as corrosion inhibition can complement the protective ability of the alloying elements on the low carbon mold steel.…”

Section: Introductionmentioning

confidence: 99%

Inhibition effect of the synergistic properties of 4-methyl-norvalin and 2-methoxy-4-formylphenol on the electrochemical deterioration of P4 low carbon mold steel

Loto

Ogaga

2020

Open Engineering

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AbstractStudy of the synergistic inhibition properties of the combined admixture of 4-methyl-norvalin and 2-methoxy-4-formylphenol (non-toxic organic compounds) on the corrosion of P4 low carbon mold steel in 1.5 M H2SO4 and HCl solution was performed with weight loss measurement, potentiodynamic polarization and optical microscopy analysis. Results obtained showed the inhibition efficiency of the admixed compound performed above the value for effective corrosion inhibition at very low concentrations in H2SO4 solution. However, from mid concentration to the highest concentration studied, the inhibition efficiency of the compound was above 85% from electrochemical tests. In HCl solution the inhibition efficiency of the compound was well above 80% and 90% for weight loss and polarization tests at all concentration studied. Anodic corrosion inhibition mechanism was determined for the compound in H2SO4 according to Freundlich and Frumkin adsorption isotherms due to weak Van der Waals attraction between the inhibitor molecules and the steel’s surface. The mechanism of corrosion inhibition in HCl was calculated to be cathodic type according to Langmuir isotherm model.Morphological images of inhibited and non-inhibited steel surfaces significantly contrast each other though the extent of deterioration was much severe for the steel from H2SO4 solution.

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Corrosion resistance of chromium‐steel and stainless steel reinforcement in concrete

Cited by 37 publications

References 46 publications

Stainless steels: Passive film composition, pitting potentials, and critical chloride content in concrete

Stainless steels: Passive film composition, pitting potentials, and critical chloride content in concrete

Steel Corrosion Evaluation of Basalt Fiber RPC Affected by Crack and Steel-Concrete Interface Damage Using Electrochemical Methods

Inhibition effect of the synergistic properties of 4-methyl-norvalin and 2-methoxy-4-formylphenol on the electrochemical deterioration of P4 low carbon mold steel

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