Effectiveness of carbon fiber-reinforced polymer as a triple-functional material for sustainable protection of reinforced concrete structures

Aifang Wei; Riyadh Al-Ameri; Mike Y.J. Tan; Yew Chin Koay; Xiancun Hu

doi:10.1007/s41062-023-01139-0

Effectiveness of carbon fiber-reinforced polymer as a triple-functional material for sustainable protection of reinforced concrete structures

Aifang Wei, Riyadh Al-Ameri, Mike Y.J. Tan, Yew Chin Koay, Xiancun Hu

Design & Built Environment

Research output: Contribution to journal › Article › peer-review

Abstract

Corrosion of steel reinforcement in concrete is one of the major issues in reducing the service life and durability performance of reinforced concrete (RC) structures. Carbon fiber-reinforced polymer (CFRP) as a triple-functional material in the impressed current cathodic protection (ICCP) system has been innovatively investigated in this study. An experimental program comprising three kinds of current densities of 0 mA/m2, 20 mA/m2 and 100 mA/m2 is presented in RC beams. All specimens are under a simulated harsh environment of 3.5% NaCl solution at 50 °C, wet-dry cycle, and sustained loading. The constant current density of 20 mA/m2 was found to be sufficient for the ICCP system, a higher current density is not needed even without using the conductive epoxy. The experimental results confirmed that CFRP can not only be used as a strengthening material, but also play a coating layer and ICCP anode role for sustainable protection of RC structures against corrosion.

Original language	English
Article number	172
Pages (from-to)	1-10
Number of pages	10
Journal	Innovative Infrastructure Solutions
Volume	8
Issue number	6
DOIs	https://doi.org/10.1007/s41062-023-01139-0 https://doi.org/10.1007/s41062-023-01139-0
Publication status	Published - 22 May 2023

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title = "Effectiveness of carbon fiber-reinforced polymer as a triple-functional material for sustainable protection of reinforced concrete structures",

abstract = "Corrosion of steel reinforcement in concrete is one of the major issues in reducing the service life and durability performance of reinforced concrete (RC) structures. Carbon fiber-reinforced polymer (CFRP) as a triple-functional material in the impressed current cathodic protection (ICCP) system has been innovatively investigated in this study. An experimental program comprising three kinds of current densities of 0 mA/m2, 20 mA/m2 and 100 mA/m2 is presented in RC beams. All specimens are under a simulated harsh environment of 3.5% NaCl solution at 50 °C, wet-dry cycle, and sustained loading. The constant current density of 20 mA/m2 was found to be sufficient for the ICCP system, a higher current density is not needed even without using the conductive epoxy. The experimental results confirmed that CFRP can not only be used as a strengthening material, but also play a coating layer and ICCP anode role for sustainable protection of RC structures against corrosion.",

keywords = "CFRP, Harsh environment, Impressed current cathodic protection, Reinforced concrete, Triple function",

author = "Aifang Wei and Riyadh Al-Ameri and Tan, {Mike Y.J.} and Koay, {Yew Chin} and Xiancun Hu",

note = "Funding Information: The authors would like to acknowledge Lube Veljanoski for his help in the laboratory work. Publisher Copyright: {\textcopyright} 2023, Springer Nature Switzerland AG.",

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AU - Wei, Aifang

AU - Al-Ameri, Riyadh

AU - Tan, Mike Y.J.

AU - Koay, Yew Chin

AU - Hu, Xiancun

PY - 2023/5/22

Y1 - 2023/5/22

N2 - Corrosion of steel reinforcement in concrete is one of the major issues in reducing the service life and durability performance of reinforced concrete (RC) structures. Carbon fiber-reinforced polymer (CFRP) as a triple-functional material in the impressed current cathodic protection (ICCP) system has been innovatively investigated in this study. An experimental program comprising three kinds of current densities of 0 mA/m2, 20 mA/m2 and 100 mA/m2 is presented in RC beams. All specimens are under a simulated harsh environment of 3.5% NaCl solution at 50 °C, wet-dry cycle, and sustained loading. The constant current density of 20 mA/m2 was found to be sufficient for the ICCP system, a higher current density is not needed even without using the conductive epoxy. The experimental results confirmed that CFRP can not only be used as a strengthening material, but also play a coating layer and ICCP anode role for sustainable protection of RC structures against corrosion.

AB - Corrosion of steel reinforcement in concrete is one of the major issues in reducing the service life and durability performance of reinforced concrete (RC) structures. Carbon fiber-reinforced polymer (CFRP) as a triple-functional material in the impressed current cathodic protection (ICCP) system has been innovatively investigated in this study. An experimental program comprising three kinds of current densities of 0 mA/m2, 20 mA/m2 and 100 mA/m2 is presented in RC beams. All specimens are under a simulated harsh environment of 3.5% NaCl solution at 50 °C, wet-dry cycle, and sustained loading. The constant current density of 20 mA/m2 was found to be sufficient for the ICCP system, a higher current density is not needed even without using the conductive epoxy. The experimental results confirmed that CFRP can not only be used as a strengthening material, but also play a coating layer and ICCP anode role for sustainable protection of RC structures against corrosion.

KW - CFRP

KW - Harsh environment

KW - Impressed current cathodic protection

KW - Reinforced concrete

KW - Triple function

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ER -

Effectiveness of carbon fiber-reinforced polymer as a triple-functional material for sustainable protection of reinforced concrete structures

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