Investigation on the electrochemical and mechanical performance of CFRP and steel-fiber composite bar used for impressed current cathodic protection anode

Zhou, Yingwu; Zheng, Xubin; Xing, Feng; Sui, Lili; Zheng, Yaowei; Huang, Xiaoxu

doi:10.1016/j.conbuildmat.2020.119377

Cited by 34 publications

(5 citation statements)

References 29 publications

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“…e elastic modulus and tensile strength of CFRP at 250°C were reduced by about 28% and 42%, respectively, as compared to room temperature [53]. Moreover, CFRP exhibits electrical conductivity; thus, it cannot be used in applications requiring insulation [54,55].…”

Section: Cfrpmentioning

confidence: 99%

Review of Experimental Studies on Application of FRP for Strengthening of Bridge Structures

Yuan

2020

Advances in Materials Science and Engineering

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In recent years, fiber-reinforced polymer (FRP) composites have been widely used as a new type of high-performance material in concrete structures. FRP composites have the advantages of high strength, light weight, and corrosion resistance. Based on existing studies in the literature, this paper reviews the development and applications of FRP materials for the strengthening and rehabilitation of bridge structures. The types and properties of FRP composites are summarized, and the applications and development of FRP sheets, FRP bars, FRP grids, and prestressed FRP tendons for bridge structures are discussed. Different types of FRP composites result in different failure characteristics and bearing capacities. Moreover, this paper covers the FRP strengthening methods and the response properties of the flexural performance, bonding performance, and ductility. Significant conclusions regarding the strengthening/repair of bridge structures with FRP composites are presented. The review details the current state of knowledge and research on strengthening bridge structures with FRP composites and is helpful for better understanding and establishing design criteria.

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Section: Cfrpmentioning

confidence: 99%

Review of Experimental Studies on Application of FRP for Strengthening of Bridge Structures

Yuan

2020

Advances in Materials Science and Engineering

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“…Ge et al [ 39 ] presented a similar test and found the maximum strength retention was 87.27%. Zhou et al [ 136 ] polarized the CFRP bar and SFCB to assess the feasibility of the bars with impressed current cathodic protection (ICCP). In the result, based on the prediction model, the service life of the CFRP bar was 62 years, while that of SFCB was only 7 years.…”

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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“…Several studies have made preliminary observations and explanations on the degradation of CFRPs in electrochemical systems, , attributing the degradation of CFRP anodes to the decomposition of resin fracture associated with C–N bonds in epoxy resins and the generation of new compounds due to the chemical reaction of CFs with the epoxy resin. , However, these papers only focused on the degradation of the overall tensile properties of CFRP anodes and the combination of the CF and matrix. Few comprehensive investigations have been conducted on the degradation mechanism of CF anodes, which could be beneficial in reducing the occurrence of CFRP anode fractures and improving the application efficiency of recycling waste CFRPs through electrochemical systems.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have made preliminary observations and explanations on the degradation of CFRPs in electrochemical systems, 7 , 8 attributing the degradation of CFRP anodes to the decomposition of resin fracture associated with C–N bonds in epoxy resins and the generation of new compounds due to the chemical reaction of CFs with the epoxy resin. 8 , 9 However, these papers only focused on the degradation of the overall tensile properties of CFRP anodes and the combination of the CF and matrix.…”

Section: Introductionmentioning

confidence: 99%

Degradation of the Three-Phase Boundary Zone of Carbon Fiber Anodes in an Electrochemical System

et al. 2023

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The electrochemical recycling nanoarchitectonics of graphene oxide from carbon fiber reinforced polymers (CFRPs) is a promising approach due to its economic and environmental benefits. However, the rapid degradation of the CFRP anode during the recycling process reduces its overall efficiency. Although previous studies have investigated the electrochemical oxidation of carbon fibers (CFs) and bonding of CFs to the matrix, few researchers have explicitly studied the electrochemical activity of CFs and the possible fracture caused by strong electrochemical reactions. To address this gap, this study investigates the degradation mechanism of CF anodes by analyzing changes in overall mechanical properties, hardness, elastic modulus, functional groups, and elemental composition of individual fibers. The experimental results demonstrate that the three-phase boundary region experiences the most severe degradation, primarily due to the number of oxygen-containing functional groups, which is the most important factor affecting the degree of degradation. This continuous decrease in the hardness and elastic modulus of individual fibers eventually leads to the fracture of CF anodes.

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Investigation on the electrochemical and mechanical performance of CFRP and steel-fiber composite bar used for impressed current cathodic protection anode

Cited by 34 publications

References 29 publications

Review of Experimental Studies on Application of FRP for Strengthening of Bridge Structures

Review of Experimental Studies on Application of FRP for Strengthening of Bridge Structures

Anti-Corrosion Reinforcements Using Coating Technologies—A Review

Degradation of the Three-Phase Boundary Zone of Carbon Fiber Anodes in an Electrochemical System

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