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Flexural performance of reinforced concrete beams strengthened with fibre reinforced geopolymer concrete under accelerated corrosion

Flexural performance of reinforced concrete beams strengthened with fibre reinforced geopolymer concrete under accelerated corrosion
Flexural performance of reinforced concrete beams strengthened with fibre reinforced geopolymer concrete under accelerated corrosion

The use of additional Reinforced Concrete (RC) layers or jackets is one of the most commonly used techniques for the strengthening of existing structural elements. A crucial parameter for these applications is the durability and the corrosion resistance of the RC layers. However, to date there are not any published studies on the use of novel cementitious materials for the improvement of the durability of the strengthened elements. In this study, a novel strengthening technique is proposed using additional high performance Fibre Reinforced Geopolymer Concrete (FRGC) layers and jackets reinforced with steel bars. The main goal of this technique is the improvement of the structural performance of the existing elements and at the same time the improvement of the durability and corrosion resistance of the strengthening layers. RC beams strengthened with reinforced FRGC layers were examined under standard and accelerated corrosion conditions. Accelerated corrosion tests were performed using the induced current technique followed by flexural tests. The results indicate superior performance for beams strengthened with FRGC and improved performance of the interface between the additional layer and the initial RC beam.

Accelerated corrosion, Fibre reinforced geopolymer concrete, Layers, Reinforced concrete beams, Strengthening
2352-0124
394-410
Al-Majidi, Mohammed Haloob
2bf1e66a-804e-4a56-86cf-a9616f61f960
Lampropoulos, Andreas P.
6416ee41-92fa-4ede-a655-e2352f0a55a3
Cundy, Andrew B.
994fdc96-2dce-40f4-b74b-dc638286eb08
Tsioulou, Ourania T.
57269f96-1ff3-41ba-8cd2-15887da26422
Alrekabi, Salam
a4b86e70-12ec-4bd7-a5df-73691b68f449
Al-Majidi, Mohammed Haloob
2bf1e66a-804e-4a56-86cf-a9616f61f960
Lampropoulos, Andreas P.
6416ee41-92fa-4ede-a655-e2352f0a55a3
Cundy, Andrew B.
994fdc96-2dce-40f4-b74b-dc638286eb08
Tsioulou, Ourania T.
57269f96-1ff3-41ba-8cd2-15887da26422
Alrekabi, Salam
a4b86e70-12ec-4bd7-a5df-73691b68f449

Al-Majidi, Mohammed Haloob, Lampropoulos, Andreas P., Cundy, Andrew B., Tsioulou, Ourania T. and Alrekabi, Salam (2019) Flexural performance of reinforced concrete beams strengthened with fibre reinforced geopolymer concrete under accelerated corrosion. Structures, 19, 394-410. (doi:10.1016/j.istruc.2019.02.005).

Record type: Article

Abstract

The use of additional Reinforced Concrete (RC) layers or jackets is one of the most commonly used techniques for the strengthening of existing structural elements. A crucial parameter for these applications is the durability and the corrosion resistance of the RC layers. However, to date there are not any published studies on the use of novel cementitious materials for the improvement of the durability of the strengthened elements. In this study, a novel strengthening technique is proposed using additional high performance Fibre Reinforced Geopolymer Concrete (FRGC) layers and jackets reinforced with steel bars. The main goal of this technique is the improvement of the structural performance of the existing elements and at the same time the improvement of the durability and corrosion resistance of the strengthening layers. RC beams strengthened with reinforced FRGC layers were examined under standard and accelerated corrosion conditions. Accelerated corrosion tests were performed using the induced current technique followed by flexural tests. The results indicate superior performance for beams strengthened with FRGC and improved performance of the interface between the additional layer and the initial RC beam.

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More information

Accepted/In Press date: 11 February 2019
e-pub ahead of print date: 23 February 2019
Published date: 1 June 2019
Keywords: Accelerated corrosion, Fibre reinforced geopolymer concrete, Layers, Reinforced concrete beams, Strengthening

Identifiers

Local EPrints ID: 430001
URI: https://eprints.soton.ac.uk/id/eprint/430001
ISSN: 2352-0124
PURE UUID: 9c5a8aca-8ab4-4a02-85ea-a6080a7864d9
ORCID for Andrew B. Cundy: ORCID iD orcid.org/0000-0003-4368-2569

Catalogue record

Date deposited: 09 Apr 2019 16:30
Last modified: 20 Jul 2019 00:34

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Contributors

Author: Mohammed Haloob Al-Majidi
Author: Andreas P. Lampropoulos
Author: Andrew B. Cundy ORCID iD
Author: Ourania T. Tsioulou
Author: Salam Alrekabi

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