Seismic resistance of the corroded bimetallic steel bar under different strain amplitudes

Hua, Jianmin; Fan, Haifeng; Yan, Wei; Wang, Neng; Xue, Xuanyi; Huang, Lifang

doi:10.1016/j.conbuildmat.2021.126088

Cited by 45 publications

(5 citation statements)

References 29 publications

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“…However, a reduction of fatigue strength due to galvanization was reported when the number of cycles to failure was larger than 10 4 . Hua et al [ 134 , 139 ] investigated the corroded low-cycle fatigue performance of SCRs. SCRs were electronically corroded to a controlled degree.…”

Section: Behavior After Corrosionmentioning

confidence: 99%

“…Both reinforcements show ductile fractures in the low-cycle region. There are gaps in the interface of the galvanized layer and steel core, a separation that was also observed in the SCR when the strain amplitude increased [ 139 ].…”

Section: Behavior After Corrosionmentioning

confidence: 99%

“…In 2015, the stainless-clad bimetallic steel bar (SCBSB) was produced by Hunan 3T New Materials CO., LTD [ 60 ]. The SCBSB improves the mechanical properties of SCRs and reduces the cost by approximately 30% [ 36 , 37 , 60 , 62 , 63 , 90 , 139 ]. A bay bridge in China adopted SCBSBs in 2021 [ 154 ].…”

Section: Applicationsmentioning

confidence: 99%

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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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Section: Behavior After Corrosionmentioning

confidence: 99%

Section: Behavior After Corrosionmentioning

confidence: 99%

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Anti-Corrosion Reinforcements Using Coating Technologies—A Review

et al. 2022

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“…In continuance, previous studies have indicated that the loadings on steel reinforcing bars due to strong earthquake events can be simulated in a laboratory by low-cycle fatigue tests [19]. Furthermore, several researchers have illustrated the drop of the useful service life of reinforcing bars due to low-cycle fatigue [20][21][22][23]. The above mentioned studies have also shown the different mechanical response of the steel reinforcing bars in cyclic toward monotonic loadings.…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Shot Blasting Process on the Dynamic Response of Steel Reinforcement

Basdeki

Apostolopoulos

2022

Metals

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As it is widely known, corrosion poses a real threat for reinforced concrete structures, especially when they are located in coastal areas. This phenomenon, in conjunction with repeated loads, such as intense seismic events, adversely affect their useful service life. Several experimental studies have presented the magnitude of degradation of steel reinforcement due to corrosion in the presence of fatigue, which affects either the serviceability or durability of steel reinforcement. As a result, the current experimental study presents the results of the shot blasting process of steel reinforcement at various times of exposure to a corrosive environment and the influence on their dynamic response after the execution of low cycle fatigue tests at different constant strain amplitudes. The findings show the beneficial effect of the shot blasting process in terms of percentage mass loss and the improvement of mechanical performance of steel bars in terms of service life and energy dissipation capacity. Moreover, the assessment performed with a quality material index demonstrates the improved mechanical performance of shot blasted specimens vs. bare specimens, in the long term for medium range-imposed deformation.

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“…No practical design method was proposed, and these issues limited its engineering application. A paint coating is commonly used to prevent the steel component from corrosive factors [22][23][24]. However, after a period of service, the paint coating usually fails because of aging and spalling.…”

Section: Introductionmentioning

confidence: 99%

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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Seismic resistance of the corroded bimetallic steel bar under different strain amplitudes

Cited by 45 publications

References 29 publications

Anti-Corrosion Reinforcements Using Coating Technologies—A Review

Anti-Corrosion Reinforcements Using Coating Technologies—A Review

The Effect of the Shot Blasting Process on the Dynamic Response of Steel Reinforcement

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

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