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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: Modeling of Near-Surface-Mounted Carbon Fiber- Reinforced Polymer for Strengthening Reinforced Concrete Beams in Sustained Load
Author(s): Yail J. Kim
Publication: Structural Journal
Appears on pages(s): 805-813
Keywords: carbon fiber-reinforced polymer (CFRP); long-term; modeling; near-surface-mounted (NSM); strengthening; sustained load
Abstract:This paper presents a theoretical model for predicting the longterm behavior of near-surface-mounted (NSM) carbon fiber reinforced polymer (CFRP) strips embedded in a reinforced concrete beam subjected to creep-induced distress. The concept of age-adjusted effective properties is employed, including timedependent material characteristics. Upon validation of the modeling approach using a previously conducted test program, a parametric investigation is performed to examine the effect of various material parameters such as concrete strength, CFRP modulus, and reinforcement ratio. A design proposal is made to facilitate NSM CFRP technologies for practical strengthening application. Four design categories are suggested depending on the level of sustained load. The proposed long-term design factors are in conformance with the time-dependent multipliers of ACI 318-11.
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