Experimental and numerical investigations on corroded stainless-clad bimetallic steel bar with artificial damage

Hua, Jianmin; Wang, Fei; Wang, Neng; Huang, Lifang; Hai, Letian; Li, Yan-Wen; Zhu, Xiaoyan; Xue, Xuanyi

doi:10.1016/j.jobe.2021.102779

Cited by 18 publications

(7 citation statements)

References 29 publications

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“…For the JY235(RE) in reference [60], the parameters A and B were calculated to be 44.12 and −0.7841, respectively. The comparisons between test results and results from Equation (16) were shown in Figure 23, which indicated that the proposed equation could be used to predict the test results of the corrosion rate accurately. The structural steel was homogeneous.…”

Section: Forecast Of Mechanical Propertiesmentioning

confidence: 97%

“…For steel structures, the corrosion issue is hard to avoid during their service life [11]. In the corrosive environment such as the marine and coastal environment, the corrosion issue is prone to occur in steel components because of the high humidity and chloride [12][13][14][15][16][17]. Some high-performance reinforcing and structural steels were suggested to reduce adverse effects from corrosion [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Property Model of Q620 High-Strength Steel with Corrosion Effects

et al. 2022

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High-strength steel (HSS) is widely used in engineering structures, due to its superior material performance, but corrosion tends to occur in steel structures with time. The corrosion effects on mechanical performance of Q620 HSS were investigated experimentally. The electrochemical accelerated corrosion test was conducted to generate corroded Q620 HSS specimens (ρ = 0~60%). With increases in the corrosion degree, corrosion performance became more and more non-uniform. The tensile coupon test was conducted to clarify mechanical properties of corroded Q620 HSS specimens. With increases in corrosion degree, fy, fu, εu and E decreased, correspondingly. The effect of corrosion on εy could be ignored. With the deepening of corrosion, the necking of Q620 HSS specimens was weakened, which reduced their ductility. The simplified constitutive model consisting of nominal yield point (εy, fy) and ultimate point (εu, fu) was proposed to quantify the mechanical properties of Q620 HSS with different corrosion degrees. After the numerical fitting, relationships between the corrosion degree and mechanical properties were clarified. Based on the results of numerical fitting, mechanical properties of corroded Q620 HSS specimens were worse than those of specimens with idealized uniform corrosion. The adverse effect of corrosion on εuc was more obvious than that on strength properties. Comparison among different mild steels and HSSs was performed. Different indexes were chosen to clarify corrosion effects on the ductility of corroded Q620 HSS specimens. This study considers and discusses the research on corrosion rates, the relationships between service time, service environment, corrosion form and strength properties of Q620 HSS.

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Section: Forecast Of Mechanical Propertiesmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Mechanical Property Model of Q620 High-Strength Steel with Corrosion Effects

et al. 2022

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“…Zhou et al [ 137 ] reported the corrosion rate of carbon-type SFCB was less than 1/10 of BSR, and that of glass-type SFCB was less than 1/100 of BSR. Hua et al conducted electrochemical accelerated corrosion tests for SCRs [ 33 , 134 , 138 ] and reported that both apparent yield strength and ultimate strength of SCRs decreased after corrosion, but the reduction of yield strength was less than that of BSR. They also proposed predictive equations and a stress–strain model to clarify the corrosion performances and mechanical properties of artificially damaged SCRs with different corrosion ratios.…”

Section: Behavior After Corrosionmentioning

confidence: 99%

Anti-Corrosion Reinforcements Using Coating Technologies—A Review

et al. 2022

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Coated reinforcements are expected to improve the performance of reinforced concrete in aggressive environments, but different kinds of coated reinforcements can express a variety of properties, which can confuse researchers and engineers. This paper reviews the manufacture, corrosion mechanisms, behaviors, and applications of popular or promising coated reinforcements, incorporating galvanized reinforcements (GRs), epoxy coated reinforcements (ECRs), stainless cladding reinforcements (SCRs), and steel-fiber reinforced polymer composite bars (SFCBs). In terms of manufacture, GRs and ECRs should focus on minimizing the negative effect of manufacture on performance, while SCRs and SFCBs should reduce the cost and increase the production capacity. Behaviors of GRs and ECRs are primarily determined by the steel substrate, but the behaviors of SCRs and SFCBs are primarily affected by the coat and core, and their interaction. The corrosion mechanism of GRs and SCRs is about oxidation, while that of SFCBs is about hydrolysis. ECRs are usually corroded under film, which can be a cause of premature failure. Corrosion embrittles SCRs, as well as bare bars, but corrosion of SFCBs usually causes a reduction in maximum strength. The investigation of the corrosion behaviors of GRs and ECRs focuses on bond strength. GRs have controversial performance. ECRs have been proven to have drawbacks regarding bond strength. The use of anti-corrosion reinforcement is uneven in regions, which may correlate with the development of technology and the economy.

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“…Corrosion dominates the service life of steel, which is also the top priority of infrastructure construction . At present, with the rise of Marine architecture, steel with excellent durability is an indispensable part of modern civil engineering materials, which is widely used in various architectural fields. , However, steel corrosion brings unpredictable safe hidden troubles and huge economic losses in lost building structures like reinforced concrete (RC), whose durability mainly depends on the performance of steel. − In RC structures, a layer of passivation film will be formed on the surface of the steel due to the highly alkaline environments by cement hydration, which has a dense structure. , The passivation film of 1–13 nm thickness can shield steel from further corrosion . Therefore, the corrosion progress in the RC structures will be largely different from the traditional understanding.…”

Section: Introductionmentioning

confidence: 99%

“…1 At present, with the rise of Marine architecture, steel with excellent durability is an indispensable part of modern civil engineering materials, which is widely used in various architectural fields. 2,3 However, steel corrosion brings unpredictable safe hidden troubles and huge economic losses in lost building structures like reinforced concrete (RC), whose durability mainly depends on the performance of steel. 4−6 In RC structures, a layer of passivation film will be formed on the surface of the steel due to the highly alkaline environments by cement hydration, which has a dense structure.…”

Section: ■ Introductionmentioning

confidence: 99%

Atomistic Insights into the Deposition of Corrosion Products on the Surfaces of Steels and Passivation Films

et al. 2023

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The deposition of corrosion products on the surface of the steel is a key step for understanding the generation of corrosion products. To clarify the molecular mechanism for corrosion product deposition, the reactive molecular dynamics were utilized to study the deposition process of ferric hydroxide (Fe(OH)3) on iron and passivation film substrates. It is shown that the deposition phenomenon mainly occurs on the iron surface, while the surface of the passivation film cannot adsorb Fe(OH)3. Further analysis indicates that the interaction between hydroxyl groups in γ-FeOOH and Fe(OH)3 is very weak, which is unfavorable to the deposition of Fe(OH)3. Moreover, the degree of ordered water in the two systems is affected slightly by deposition but the oxygen in water corrodes Fe(OH)3, breaking its Fe–O bonds, which is more obvious in the Fe system due to its instability. This work has revealed the nanoscale deposition process of corrosion products on the passivation film in a solution environment by reproducing the bonding and breaking of atoms at the molecular level, which is a case in point to the conclusion of the protection of steel bars by passivation film.

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Experimental and numerical investigations on corroded stainless-clad bimetallic steel bar with artificial damage

Cited by 18 publications

References 29 publications

Mechanical Property Model of Q620 High-Strength Steel with Corrosion Effects

Mechanical Property Model of Q620 High-Strength Steel with Corrosion Effects

Anti-Corrosion Reinforcements Using Coating Technologies—A Review

Atomistic Insights into the Deposition of Corrosion Products on the Surfaces of Steels and Passivation Films

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