Stray alternating current (AC) induced corrosion of steel fibre reinforced concrete

Tang, Kangkang

doi:10.1016/j.corsci.2019.02.006

Cited by 50 publications

(6 citation statements)

References 23 publications

(30 reference statements)

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“…In the past decades, due to the rising energy consumption, the requirement of reducing environmental impact and geographical restrictions, underground pipelines are buried in parallel with AC power lines or electrified trains to construct the energy corridor [22][23][24][25]. Therefore, AC will penetrate into the soil and interact strongly with nearby pipelines, which may promote the corrosion of alloys employed in these cases.…”

Section: Introductionmentioning

confidence: 99%

Effect of pH on corrosion behaviour of CoCrNi MEA imposed by alternating current in Na₂CO₃/NaHCO₃ solution

Zhang,

Zhu,

Yuan

et al. 2023

Corrosion Engineering, Science and Technology: The Internationa

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The corrosion behaviour and mechanism of CoCrNi medium-entropy alloy (MEA) imposed by alternating current (AC) in HCO 3 − /CO 3 2− solution with various pH were systematically investigated via a series of corrosion tests. The results showed that with the augment of pH value, the polarisation resistance of the MEA decreased significantly, Ep shifted negatively, and ipI value increased, as well as corrosion rate was enhanced, revealing that the corrosion resistance was weakened. As solution pH increased, the formation of secondary passivation zone became easier, which may be attributed to the reaction conversion process of Cr(III) to Cr(VI) species. Moreover, the increase in pH led to an increase in defect density and a thinning of passivation film, facilitating the corrosion of the MEA. AC interference accelerated the ion exchange process and promoted the formation possibility of stable pitting. Higher iAC and pH inhibited the repassivation of metastable pitting, and increased the pitting susceptibility.

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Section: Introductionmentioning

confidence: 99%

Effect of pH on corrosion behaviour of CoCrNi MEA imposed by alternating current in Na₂CO₃/NaHCO₃ solution

Zhang,

Zhu,

Yuan

et al. 2023

Corrosion Engineering, Science and Technology: The Internationa

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“…(2) it can only give corrosion rates calculated by weight variations and not provide any other data; (3) it cannot accurately measure the corrosion rate of metals with very low rates. With the development of electrochemical techniques, polarization curves have become popular in many fields, such as the corrosion of metals [1][2][3], the corrosion of reinforced concrete [4], corrosion inhibitors [5,6], coatings [7], fuel cells [8], and so on. Electrochemical techniques have been shown to be very useful for discussing mechanisms in laboratory studies and monitoring purposes in field investigations.…”

Section: Introductionmentioning

confidence: 99%

Effects of the IR Drop on the Electrochemical Corrosion of X80 Pipeline Steel in Different Solutions

Bai

Wei

et al. 2022

Coatings

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Polarization curves are popularly used in many investigations; however, some wrong results are obtained when inexperienced researchers do not deeply understand electrochemical processes. In this study, the effects of the IR drop (Deviation due to I (current) and R (resistance)) and scanning direction on polarization curves were investigated. Three different test methods were used to test the polarization curve of X80 pipeline steel in five kinds of solutions. The different scanning directions led to differences in the cathodic polarization curves. In addition, the effect of IR drop on the Tafel curve in acidic solutions is significantly greater than in neutral and alkaline solutions. There is a large effect of the IR drop on shapes and fitting results of polarization curves in acidic solutions, and the IR drop must be considered for the fitting of curves. Scanning direction has an influence on the shape of polarization curves when a layer of corrosion products is formed on the steel surface, and a novel two-electrode coupon was introduced to solve this problem.

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“…Similar to ordinary concrete, RPC is prone to brittle failure without fiber [5,6]. Therefore, steel fiber (SF) is usually added to RPC to enhance its crack resistance [7]. However, SF is prone to rust, which will deteriorate the durability of the RPC structure in the long-term.…”

Section: Introductionmentioning

confidence: 99%

Bending Resistance and Failure Type Evaluation of Basalt Fiber RPC Beam Affected by Notch and Interfacial Damage Using Acoustic Emission

et al. 2020

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Generally, reactive powder concrete (RPC) contains steel fibers often exposed to aggressive environments. Steel fibers in such RPCs are subjected to corrosion in-service, which can significantly change the mechanical properties of the structural components. In this paper, basalt fibers were used to replace steel fibers for preparing a new basalt fiber modified reactive powder concrete (BFRPC). The bending resistance of BFRPC beams was studied, and the crack propagation and failure type of BFRPC beam were monitored by acoustic emission (AE). During the bending test, the failure type of BFRPC was evaluated by AE. Besides, the effects of notch and interfacial damage on the bending resistance and failure type were also studied. During the test, ordinary Reactive Powder Concrete (RPC) without basalt fibers was used as a reference. Results revealed that failure type of the RPC beam and BFRPC beam was mainly caused by shear failure. The notch increased the number of tensile cracks in the beam failure crack, resulting in a decrease in the bending resistance of RPC beam and BFRPC beam. Besides, basalt fiber could improve the toughness and bending resistance of BFRPC beam and increase resistance of the BFRPC beam to notch and interface damage.

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Stray alternating current (AC) induced corrosion of steel fibre reinforced concrete

Cited by 50 publications

References 23 publications

Effect of pH on corrosion behaviour of CoCrNi MEA imposed by alternating current in Na₂CO₃/NaHCO₃ solution

Effect of pH on corrosion behaviour of CoCrNi MEA imposed by alternating current in Na₂CO₃/NaHCO₃ solution

Effects of the IR Drop on the Electrochemical Corrosion of X80 Pipeline Steel in Different Solutions

Bending Resistance and Failure Type Evaluation of Basalt Fiber RPC Beam Affected by Notch and Interfacial Damage Using Acoustic Emission

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Stray alternating current (AC) induced corrosion of steel fibre reinforced concrete

Cited by 50 publications

References 23 publications

Effect of pH on corrosion behaviour of CoCrNi MEA imposed by alternating current in Na2CO3/NaHCO3 solution

Effect of pH on corrosion behaviour of CoCrNi MEA imposed by alternating current in Na2CO3/NaHCO3 solution

Effects of the IR Drop on the Electrochemical Corrosion of X80 Pipeline Steel in Different Solutions

Bending Resistance and Failure Type Evaluation of Basalt Fiber RPC Beam Affected by Notch and Interfacial Damage Using Acoustic Emission

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Effect of pH on corrosion behaviour of CoCrNi MEA imposed by alternating current in Na₂CO₃/NaHCO₃ solution

Effect of pH on corrosion behaviour of CoCrNi MEA imposed by alternating current in Na₂CO₃/NaHCO₃ solution