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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: Shear Strengthening of RC Beams with Near-Surface-Mounted CFRP Laminates
Author(s): S. Dias and J. Barros
Publication: Special Publication
Appears on pages(s): 807-824
Keywords: carbon fiber reinforced polymers; externally bonded reinforcing; near surface mounted; shear strengthening
Abstract:The efficacies of the Near Surface Mounted (NSM) and Externally BondedReinforcing (EBR) techniques for the shear strengthening of rectangular cross sectionRC beams are compared. Both techniques are based on the use of carbon fiberreinforced polymer (CFRP) materials. The NSM was the most effective technique, andwas also the easiest and fastest to apply, and assured the lowest fragile failure modes.The performance of the ACI and fib analytical formulations for the EBR shearstrengthening was appraised. In general, the contribution of the CFRP systemspredicted by the analytical formulations was larger than the values registeredexperimentally. The capability of the De Lorenzis formulation of predicting thecontribution of the NSM technique for the shear strengthening of RC beams wasappraised using bond stress and CFRP effective strain values obtained in pulloutbending tests. This formulation provided values 61% lower than the values obtainedexperimentally.
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