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Towards innovative FRP fabric reinforcement in concrete beams: concrete–CFRP bond

Towards innovative FRP fabric reinforcement in concrete beams: concrete–CFRP bond
Towards innovative FRP fabric reinforcement in concrete beams: concrete–CFRP bond
The paper reports results of an experimental investigation into load response and failure behaviour of rectangular prismatic concrete beams reinforced with a combined flexural and shear reinforcement system made from carbon fibre reinforced polymer (CFRP) fabric. It is shown that CFRP U-channels with aggregate coating and an anchorage system consisting of a lipped channel section with intermittent closed loops were found to provide improved composite action between the CFRP reinforcement and concrete. These CFRP channels also ensured adequate strength and ductility before failure. Possible modes of failures of the beams are discussed as is the effect of the design parameters on the failure mode and the failure load. It is anticipated that the findings of this paper could be effectively used in other applications such as non-prismatic concrete geometries and as permanent formwork/reinforcement in thin concrete members where the flexible characteristics of dry CFRP fabrics are most useful.
0024-9831
Achintha, Mithila
8163c322-de6d-4791-bc31-ba054cc0e07d
Alami, Fikri
3b8b98d4-237f-46a4-b597-5be691cd0a8f
Harry, Sian
9f691705-36be-48a5-adca-2e948a4eed4f
Bloodworth, Alan
7c387496-bb5e-47ab-9a31-c60500799c7e
Achintha, Mithila, Alami, Fikri, Harry, Sian and Bloodworth, Alan (2017) Towards innovative FRP fabric reinforcement in concrete beams: concrete–CFRP bond Magazine of Concrete Research (doi:10.1680/jmacr.17.00016).

Achintha, Mithila, Alami, Fikri, Harry, Sian and Bloodworth, Alan (2017) Towards innovative FRP fabric reinforcement in concrete beams: concrete–CFRP bond Magazine of Concrete Research (doi:10.1680/jmacr.17.00016).

Record type: Article

Abstract

The paper reports results of an experimental investigation into load response and failure behaviour of rectangular prismatic concrete beams reinforced with a combined flexural and shear reinforcement system made from carbon fibre reinforced polymer (CFRP) fabric. It is shown that CFRP U-channels with aggregate coating and an anchorage system consisting of a lipped channel section with intermittent closed loops were found to provide improved composite action between the CFRP reinforcement and concrete. These CFRP channels also ensured adequate strength and ductility before failure. Possible modes of failures of the beams are discussed as is the effect of the design parameters on the failure mode and the failure load. It is anticipated that the findings of this paper could be effectively used in other applications such as non-prismatic concrete geometries and as permanent formwork/reinforcement in thin concrete members where the flexible characteristics of dry CFRP fabrics are most useful.

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Accepted/In Press date: 30 October 2017
e-pub ahead of print date: 30 October 2017

Identifiers

Local EPrints ID: 415269
URI: http://eprints.soton.ac.uk/id/eprint/415269
ISSN: 0024-9831
PURE UUID: f7a9fb78-d7ea-455e-9ef4-9913f10ab415

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Date deposited: 06 Nov 2017 17:30
Last modified: 06 Nov 2017 17:30

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Contributors

Author: Fikri Alami
Author: Sian Harry
Author: Alan Bloodworth

University divisions

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