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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 FRP-Concrete Bond Using Nonlinear Damage Mechanics
Author(s): C.A. Coronado and M.M. Lopez
Publication: Special Publication
Appears on pages(s): 373-390
Keywords: concrete-epoxy interface; finite element modeling; fractureenergy; FRP laminate; numerical modeling; plastic damage; pull-offbond test; softening curve
Abstract:In this study, experimental and numerical procedures are proposed topredict the debonding failure of concrete elements strengthened with fiber-reinforcedpolymers (FRP). The experimental tests were designed to obtain the tensile softeningcurve and fracture energy of the concrete-epoxy interface. Results indicate that thefracture energies of plain concrete and concrete-epoxy interface are different inmagnitude. The numerical simulations were conducted using a plastic-damage model.In this approach, the damage is defined using the tensile softening curve. Numericalresults were validated against experimental results obtained from pull-off bond tests.The numerical models were capable of predicting the experimentally observed load-strain, strain distributions, failure load, and failure mechanism of the pull-offspecimens.
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