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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: A Solution for Intermediate Crack-Induced Debonding in Plated Beams
Author(s): V. Narayanamurthy, J.F. Chen and J. Cairns
Publication: Special Publication
Appears on pages(s): 1-18
Keywords: Concrete; IC Debonding; FRP; Interface; Interfacial stresses; Fracture energy
Abstract:Adhesively bonded FRP plate on the tension face of RC beams and slabs increases their flexural strength. The behaviour of the strengthened structure depends on the robustness of the FRP-RC interface bond. Correct modelling of this interface bond behaviour is very important to understand and characterize the common intermediate crack-induced (IC) debonding failure. Existing literature based on simple pull-off test is inadequate to fully analyse this failure due to the differences in the mechanics of failure. This paper considers axial forces, transverse shear forces and bending moments in the adherends of the bonded joint and provides solutions for the different states of the interface experienced using a linearly softening bond-slip model. The inclusion of bending and shear deformations introduces difficulties in relating the applied loading and the interfacial deformation but they are overcome in this study through a section analysis with partial interaction and a closed-form solution is obtained.
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