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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: Evaluation of Time and Temperature Dependent Deformation of FRP Bonded to Concrete
Author(s): Yoseok Jeong, Anurag Jaipuriar, Maria M. Lopez, and Charles E. Bakis
Publication: Special Publication
Appears on pages(s): 1-18
Keywords: FRP; Externally Bonded; Stress Distribution; Creep; Debonding.
Abstract:Most of the recent research on the bond characteristics of the concrete-FRP interface involves short-term behavior which may not be indicative of bond behavior following sustained forces on the adhesive joint, particularly in the case of ambient-curing adhesives which can take weeks to reach their full strength capability. The objective of the research effort is to investigate the effects of sustained loads and various temperatures on the bond behavior of FRP sheets bonded to concrete. The approach involves experiments and numerical analysis. The model was parameterized with experiments on the concrete, FRP, interface, and epoxy. Good correlation was seen between the numerical simulations and pull-off experiments. Parametric studies shed light on the influence of temperature, epoxy modulus, and epoxy thickness on the redistribution of interfacial shear stress during sustained loading. This investigation confirms the hypothesis that interfacial stress redistribution can occur due to sustained load and elevated temperature and its effect can be significant.
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