Study on FRP-Concrete Interface Bond Performance.

概要

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In this paper, an experimental investigation program of the shear-bonded test between the continuous fiber sheet (CFS) and concrete was performed. The experimental results showed quantitatively the load-carrying capacity of adhesive bonded CFS-concrete interface, effective bonding length of CFS affected by the changes of the stiffness of the CFS and the interfacial fracture energies. The interfacial fracture energies were identified by the experimental results. Moreover, the relationship between the local shear stress τ and relative shear displacement δ along the CFS-concrete interface was also identified by experimental approaches. Besidcs, the relationship of τ-δ was also presumed through comparison between the theoretical and experimental results. It is showed that Linearly ascending and descending branch of interfacial stress-slip relationship could be described well the interfacial local shear stress distribution, effective bonding length, and initiation and propagation of interfacial crack.
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