Hybrid (FRP+Steel) Reinforcement for Concrete Structures

by Antonio Nanni, Pennsylvania State Univ, University Park, United States,
Tadashi Okamoto, Pennsylvania State Univ, University Park, United States,
Masaharu Tanigaki, Pennsylvania State Univ, University Park, United States,
Markus J. Henneke, Pennsylvania State Univ, University Park, United States,



Document Type: Proceeding Paper

Part of: Materials: Performance and Prevention of Deficiencies and Failures

Abstract:

The most popular method to prevent corrosion of steel rebars and prestressing tendons is epoxy coating. This paper presents an alternative approach consisting in the combination of a fiber-reinforced-plastic (FRP) skin bonded to a steel wire core. The FRP skin is braided directly around the steel core, it can be made of various epoxy-impregnated fiber types, and it is fully-bonded to the core. The characteristics of hybrid reinforcement are such that both skin and core have a structural function. Experimental results are given to show the tensile characteristics of hybrid rods. The performance of reinforced concrete beams using conventional steel rebars, FRP rods, and hybrid rods is reported.

Subject Headings: Fiber reinforced polymer | Synthetic materials | Structure reinforcement | Steel structures | Steel fibers | Steel beams | Reinforced concrete

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