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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: Wet-Bond of Concrete to FRP Formwork using Epoxy Adhesive
Author(s): Z. Wu and Y. Shao
Publication: Special Publication
Appears on pages(s): 171-182
Keywords: carbon-glass hybrid fibers; fiber-reinforced polymer (FRP); wet-bond
Abstract:The cost-effective FRP-concrete composite structures represent the future of composites for corrosion-resistant and maintenance-free construction. The success of such structures is dependent on the bond between FRP and concrete to ensure a composite action. This paper is to present a study on the wet-bond technology to achieve the adhesive bond between prefabricated stay-inplace FRP form and cast-in-place concrete. Three wet bond agents were investigated, one employing conventional epoxy resins, one underwater resin, and one bonded aggregates, respectively. Three composite U-shape profiles of 2 m (6.6 ft) long were prefabricated, then coated with bonding agent, one type for each, and used as stay-in-place formwork for cast-in-place concrete beams. The FRP composite profiles also served as external reinforcements that incorporated high-modulus carbon sheets and high-ductility E-glass sheets to achieve required stiffness and ductility. With minimum internal steel reinforcement (r = 0.2%) to control the crack width, the composite beams had exhibited a comparable flexural stiffness and an enhanced resistance to first crack, post-cracking yielding and ultimate failure in comparison to RC beams of r = 1.5%.
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