Improving corrosion resistance of reinforced concrete structures using carbon fibre reinforced polymer

Aifang Wei, Riyadh Al-Ameri, Mike Yongjun Tan, Yew Chin Koay

Research output: A Conference proceeding or a Chapter in BookConference contributionpeer-review


Corrosion of steel is regarded as one of the most important issues for the durability of reinforced concrete (RC) structures, as corrosion can induce the serviceability decrease, bond strength dropping, steel properties reduction, and longitudinal cracking in RC structures. Carbon fibre reinforced polymer (CFRP) has been applied in RC structures for strengthening existing structures, due to such benefits in high flexural strength, reducing drying shrinkage and improving tensile strength etc. However, limited researches related to the corrosion of RC structures wrapped by CFRP could be identified. This study aims to improve corrosion resistance of reinforced concrete structure using CFRP. The steel corrosion diffusion of RC structures with different CFRP wrapped ratios, mainly in the corrosion initiation stage, was investigated in 3.5% NaCl solution. The monitoring techniques of the open circuit potential (OCP), linear polarised resistance (LPR) and electrochemical impedance spectroscopy (EIS) were employed to monitor and assess the corrosion behaviour of RC specimens. The experimental results indicated that CFRP could delay the corrosion diffusion of RC elements. The study has benefits in enhancing the durability of RC structures using CFRP for strengthening existing civil engineering structures.
Original languageEnglish
Title of host publicationAustroads Bridge Conference
PublisherTransportation Research Board
Number of pages1
Publication statusPublished - 2017
Externally publishedYes
EventAustroads Bridge Conference - Melbourne, Australia
Duration: 2 Apr 20176 Apr 2017


ConferenceAustroads Bridge Conference


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