Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP

Bassam Abdulrahman; Zhang-Jian Wu; Lee Cunningham

doi:10.1016/j.conbuildmat.2017.02.056

Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP

Bassam Abdulrahman, Zhang-Jian Wu, Lee Cunningham

Research output: Contribution to journal › Article › peer-review

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Abstract

This research investigates the effectiveness of strengthening flat slab to column corner connections by using carbon fibre reinforced polymer (CFRP) sheets. Towards this, four full scale un-strengthened and strengthened flat slab specimens were studied experimentally. Further variation in the test series was introduced via addition of openings near the slab column intersections. The structural performance of the strengthened specimens was compared with that of the un-strengthened specimen in terms of ultimate punching shear resistance, deflection profile and strain profile etc. From the series of slabs tested, it can be concluded that strengthening in the slab without the opening increased the ultimate punching shear capacity by 11 %, while in the case of the slab with openings, strengthening increased the punching shear capacity by up to 23 %. In parallel with the experimental work, a numerical study was also conducted in order to gain further insight into the structural behaviour of the slabs.

Original language	English
Pages (from-to)	132-147
Number of pages	16
Journal	Construction and Building Materials
Volume	139
Early online date	23 Feb 2017
DOIs	https://doi.org/10.1016/j.conbuildmat.2017.02.056
Publication status	Published - 15 May 2017

Keywords

concrete slabs
corner columns
punching shear
CFRP
Strengthening

Access to Document

10.1016/j.conbuildmat.2017.02.056

Bassam et al_CandB Materials_Author Accepted Manuscript_Feb 2017Accepted author manuscript, 3.06 MB

2 Conference contribution
2 Article

Experimental and Numerical Investigation of FRP and Concrete Composite Deck Components
Alsaleh, A., Cunningham, L. & Achintha, M., 30 Apr 2024, Proceedings of the 19th European Bridge Conference, 2024: Euro Bridge 2024. Forde, M. (ed.).
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
Numerical Investigation of CFRP-strengthened Reinforced Concrete Columns subject to Lateral Impact
Almatrafi, A., Cunningham, L. & Wu, Z., 13 Jun 2024, (Accepted/In press) Proceedings of the 19th International Conference on Structural Faults and Repair, 2024: SFR 2024. Forde, M. (ed.). Edinburgh, p. 1-12
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
Behaviour of RC beams strengthened in flexure with hybrid CFRP-reinforced UHPC overlays
Kadhim, M. M. A., Jawdhari, A., Nadir, W. & Cunningham, L., 13 Apr 2022, (E-pub ahead of print) In: Engineering Structures. p. 1-19
Research output: Contribution to journal › Article › peer-review

Cite this

@article{079858d751db41dabb85904dcfbca995,

title = "Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP",

abstract = "This research investigates the effectiveness of strengthening flat slab to column corner connections by using carbon fibre reinforced polymer (CFRP) sheets. Towards this, four full scale un-strengthened and strengthened flat slab specimens were studied experimentally. Further variation in the test series was introduced via addition of openings near the slab column intersections. The structural performance of the strengthened specimens was compared with that of the un-strengthened specimen in terms of ultimate punching shear resistance, deflection profile and strain profile etc. From the series of slabs tested, it can be concluded that strengthening in the slab without the opening increased the ultimate punching shear capacity by 11 %, while in the case of the slab with openings, strengthening increased the punching shear capacity by up to 23 %. In parallel with the experimental work, a numerical study was also conducted in order to gain further insight into the structural behaviour of the slabs. ",

keywords = "concrete slabs, corner columns, punching shear, CFRP, Strengthening",

author = "Bassam Abdulrahman and Zhang-Jian Wu and Lee Cunningham",

year = "2017",

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doi = "10.1016/j.conbuildmat.2017.02.056",

language = "English",

volume = "139",

pages = "132--147",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP

AU - Abdulrahman, Bassam

AU - Wu, Zhang-Jian

AU - Cunningham, Lee

PY - 2017/5/15

Y1 - 2017/5/15

N2 - This research investigates the effectiveness of strengthening flat slab to column corner connections by using carbon fibre reinforced polymer (CFRP) sheets. Towards this, four full scale un-strengthened and strengthened flat slab specimens were studied experimentally. Further variation in the test series was introduced via addition of openings near the slab column intersections. The structural performance of the strengthened specimens was compared with that of the un-strengthened specimen in terms of ultimate punching shear resistance, deflection profile and strain profile etc. From the series of slabs tested, it can be concluded that strengthening in the slab without the opening increased the ultimate punching shear capacity by 11 %, while in the case of the slab with openings, strengthening increased the punching shear capacity by up to 23 %. In parallel with the experimental work, a numerical study was also conducted in order to gain further insight into the structural behaviour of the slabs.

AB - This research investigates the effectiveness of strengthening flat slab to column corner connections by using carbon fibre reinforced polymer (CFRP) sheets. Towards this, four full scale un-strengthened and strengthened flat slab specimens were studied experimentally. Further variation in the test series was introduced via addition of openings near the slab column intersections. The structural performance of the strengthened specimens was compared with that of the un-strengthened specimen in terms of ultimate punching shear resistance, deflection profile and strain profile etc. From the series of slabs tested, it can be concluded that strengthening in the slab without the opening increased the ultimate punching shear capacity by 11 %, while in the case of the slab with openings, strengthening increased the punching shear capacity by up to 23 %. In parallel with the experimental work, a numerical study was also conducted in order to gain further insight into the structural behaviour of the slabs.

KW - concrete slabs

KW - corner columns

KW - punching shear

KW - CFRP

KW - Strengthening

U2 - 10.1016/j.conbuildmat.2017.02.056

DO - 10.1016/j.conbuildmat.2017.02.056

M3 - Article

SN - 0950-0618

VL - 139

SP - 132

EP - 147

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP

Abstract

Keywords

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Research output

Experimental and Numerical Investigation of FRP and Concrete Composite Deck Components

Numerical Investigation of CFRP-strengthened Reinforced Concrete Columns subject to Lateral Impact

Behaviour of RC beams strengthened in flexure with hybrid CFRP-reinforced UHPC overlays

Cite this