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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: Debonding in FRP-Strengthened Debonding in FRP-Strengthened Shear-Span Ratios
Author(s): Z. Wu and S. Hemdan
Publication: Special Publication
Appears on pages(s): 411-426
Keywords: debonding; effective bonding length; fiber reinforcedpolymers (FRP); shear-span ratio
Abstract:The use of fiber reinforced polymers (FRP) as external reinforcement to thetension face of concrete members has bean accepted as an effective mean ofstrengthening and retrofitting aging and deteriorated structures. One of the problemswhich limit the full utilization of the material strength is the premature failure due todebonding. In this study a special attention is paid to investigate the effect of theshear-span ratio on the debonding due to flexural cracks of concrete in FRP-retrofittedbeams. Based on finite element analysis and nonlinear fracture mechanics, thedebonding behavior of FRP-retrofitted beams with different shear-span ratios wasinvestigated. The initiation of macro debonding of each beam was recorded and mainfactors affecting the effective bonding length were discussed. It is concluded thatshear-span ratio has an insignificant effect on the initiation of macro debonding while itgreatly affects the effective bonding length.
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