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Mechanical behaviour of concrete beams reinforced with CFRP U-channels

Mechanical behaviour of concrete beams reinforced with CFRP U-channels
Mechanical behaviour of concrete beams reinforced with CFRP U-channels
This paper presents selected findings from an experimental investigation that aimed to exploit the use of multidirectional carbon fibre reinforced polymer (CFRP) fabric as combined shear and flexural reinforcement in concrete beams. The results of the bond behaviour of rectangular prismatic concrete beams reinforced with three different CFRP fabric reinforcement configurations, a plain U-shaped channel, a U-shaped channel with aggregate coating, and a lipped U-channel section with intermittent closed loops, are presented. By considering the load response and the failure behaviour of the beams, it is shown that the use of an aggregate coating on internal and external surfaces of the CFRP channel ensured a better composite action between the CFRP reinforcement and the concrete than that between the plain CFRP channel and the concrete. On the other hand, provision of an anchorage system at the top end of the sides of the CFRP channel ensured a greater post-breakage capacity and a ductility compared to the beam with the plain CFRP channel. It is then shows that the use of U-shaped CFRP channels with aggregate coating and an anchorage system consisting of a lipped channel section with intermittent closed loops provided improved strength and ductility in concrete beams. The research output has potential to develop reinforcement systems for structurally optimised non-prismatic concrete geometries and also as permanent formwork/reinforcement in thin concrete members.
304-309
Achintha, Mithila
8163c322-de6d-4791-bc31-ba054cc0e07d
Alami, Fikri
3b8b98d4-237f-46a4-b597-5be691cd0a8f
Harry, Sian
9f691705-36be-48a5-adca-2e948a4eed4f
Blooddworth, Alan
7c387496-bb5e-47ab-9a31-c60500799c7e
Guadagnini,, Maurizio
Achintha, Mithila
8163c322-de6d-4791-bc31-ba054cc0e07d
Alami, Fikri
3b8b98d4-237f-46a4-b597-5be691cd0a8f
Harry, Sian
9f691705-36be-48a5-adca-2e948a4eed4f
Blooddworth, Alan
7c387496-bb5e-47ab-9a31-c60500799c7e
Guadagnini,, Maurizio

Achintha, Mithila, Alami, Fikri, Harry, Sian and Blooddworth, Alan, (2017) Mechanical behaviour of concrete beams reinforced with CFRP U-channels Guadagnini,, Maurizio (ed.) In Proceedings of the 8th Biennial Conference on Advanced Composites In Constructionn. vol. 1, 6 pp, pp. 304-309.

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents selected findings from an experimental investigation that aimed to exploit the use of multidirectional carbon fibre reinforced polymer (CFRP) fabric as combined shear and flexural reinforcement in concrete beams. The results of the bond behaviour of rectangular prismatic concrete beams reinforced with three different CFRP fabric reinforcement configurations, a plain U-shaped channel, a U-shaped channel with aggregate coating, and a lipped U-channel section with intermittent closed loops, are presented. By considering the load response and the failure behaviour of the beams, it is shown that the use of an aggregate coating on internal and external surfaces of the CFRP channel ensured a better composite action between the CFRP reinforcement and the concrete than that between the plain CFRP channel and the concrete. On the other hand, provision of an anchorage system at the top end of the sides of the CFRP channel ensured a greater post-breakage capacity and a ductility compared to the beam with the plain CFRP channel. It is then shows that the use of U-shaped CFRP channels with aggregate coating and an anchorage system consisting of a lipped channel section with intermittent closed loops provided improved strength and ductility in concrete beams. The research output has potential to develop reinforcement systems for structurally optimised non-prismatic concrete geometries and also as permanent formwork/reinforcement in thin concrete members.

Text ACIC2017_paper_46 - Accepted Manuscript
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More information

Published date: 6 September 2017
Venue - Dates: 8th Biennial Conference on Advanced Composites In Construction, Sheffield, United Kingdom, 2017-09-05 - 2017-09-07

Identifiers

Local EPrints ID: 414879
URI: http://eprints.soton.ac.uk/id/eprint/414879
PURE UUID: 32ac1b95-004b-485f-86df-1b0aaf25e3cb

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Date deposited: 13 Oct 2017 16:30
Last modified: 13 Oct 2017 16:30

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Contributors

Author: Fikri Alami
Author: Sian Harry
Author: Alan Blooddworth
Editor: Maurizio Guadagnini,

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