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U-type mechanical clamping to anchor the CFRP composites in strengthening of RC beams subjected to bending by Letcham, K (author);Vincent, P (author) is a Engineering article available to read on EtoBox.

What is U-type mechanical clamping to anchor the CFRP composites in strengthening of RC beams subjected to bending about?

The present study investigates the performance of U-type clamp anchorage on external strengthening of reinforced concrete beams using carbon fibre-reinforced polymer composites. Unidirectional carbon fibre was used to strengthen the beam having a cross-section of 150 × 200 mm2 and the fabricated U-type clamp was used as a clamping device to enhance the fibre-reinforced polymer (FRP) bonding. To test the beam, four-point bending system was adopted and the experimental parameters were the number of FRP layers. The failure mode of strengthened beams with U-type clamp was very similar (rupture of FRP composites) to the beams without U-type clamp. However, the delamination of FRP was evaded by counteracting the peeling stress development at the edge of fibre. Since the beams strengthened with U-type clamp exhibited more linear behaviour than that of the beams strengthened without U-type clamp, there may be a higher possibility for abrupt/rapid/brittle mode of failure and the ductility index of the beam with U-type clamp confirmed the above behaviour. However, the introduction of U-type clamp enhanced the flexural stiffness and ultimate strength by counteracting the debonding, and the be

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Author

Letcham, K (author);Vincent, P (author)

Publisher

SAGE Publications

Published

2021

Language

EN

Field

Engineering (Physical Sciences)