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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Post-Repair Performance of Corroded Bond Critical RC Beams Repaired with CFRP
Author(s): B.C. Craig and K.A. Soudki
Publication: Special Publication
Appears on pages(s): 563-578
Keywords: bond; CFRP; confinement; corrosion; repair
Abstract:Presented in this paper is an investigation on the ability of externally appliedfiber reinforced polymer (FRP) laminates to maintain bond of steel reinforcement inconcrete members subjected to corrosion. Specimens were transversely confined withCFRP laminates in the bond zone after being subjected to various degrees of corrosionranging from 2 to 10% theoretical mass loss. Some specimens were further corrodedafter repair to assess the effects of further structural deterioration. Control beams weresubjected to minor amounts of corrosion and tested to failure without repair. Testresults showed that CFRP wrapping was able to confine the corrosion cracking resultingin an overall flexural failure for all repaired specimens unlike the brittle bond splittingfailures of the control specimens. CFRP confinement proved less effective at higherlevels of pre-repair corrosion. Initial amounts of post-repair corrosion enhanced theperformance of the CFRP repair by increasing the confining pressure; however theconcrete rapidly deteriorated as the corrosion increased. In general, CFRP confinementwas found to provide superior bond performance with respect to the unrepairedmembers indicating the potential future use in field applications of bond repair.
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