Seismic Repair and Strengthening of Lap Splices in RC Columns: Carbon Fiber–Reinforced Polymer versus Steel Confinement

ElSouri, A M; Harajli, Mohamed H.

doi:10.1061/(asce)cc.1943-5614.0000213

Cited by 45 publications

(12 citation statements)

References 4 publications

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“…lap length l b =20-35d b , where d b is the bar size) [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Despite the extensive researchefforts,relatively littleresearch has focusedon developing appropriate analyticalmodels for the strengthening of column splices using FRP materials.…”

Section: Introductionmentioning

confidence: 99%

Bond behaviour of substandard splices in RC beams externally confined with CFRP

Garcia¹,

Helal²,

Pilakoutas³

et al. 2014

Construction and Building Materials

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Bond splitting is investigated using flexuraltests ontwelve RCbeams with substandard laps(25 bar diameters)at midspan.Differentconfinementconfigurationsof the splice region, concrete coversand bar sizesare examined.The resultsshow thatCFRP confinement enhancesthe splicebond strength by up to 65%compared to unconfined specimens.Predictiveequationsfrom the literature are shown to yield a large scatter in results and tooverestimate the strain developedin theCFRPconfinement. Analternative approach to calculatetheconfinement strain and theadditional bond strength provided byCFRP confinementis proposedand validated.

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Section: Introductionmentioning

confidence: 99%

Bond behaviour of substandard splices in RC beams externally confined with CFRP

Garcia¹,

Helal²,

Pilakoutas³

et al. 2014

Construction and Building Materials

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“…It was reported that providing the steel angles anchored to foundation on the column corners improved the flexural strength as compared to the use of FRP only. A study by ElSouri and Harajli [97] compared the seismic performance of lap-spliced RC columns on strengthening with internal steel ties, external fiber-reinforced polymer sheets and a combination of both. It was found that the repair/strengthening of the columns with internal ties, external FRP sheets or a combination of both improved the seismic performance significantly in terms of lateral load, energy dissipation and drift capacity.…”

Section: Frp Sheets With Steel Jacketingmentioning

confidence: 99%

Strengthening and Repair of Reinforced Concrete Columns by Jacketing: State-of-the-Art Review

et al. 2019

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Sustainability necessitates the protection of infrastructure from any kind of deterioration over the life cycle of the asset. Deterioration in the capacity of reinforced concrete (RC) infrastructure (e.g., bridges, buildings, etc.) may result from localised damage sustained during extreme loading scenarios, such as earthquakes, hurricanes or tsunamis. In addition, factors such as the corrosion of rebars or ageing may also deteriorate or degrade the capacity of an RC column, thereby necessitating immediate strengthening to either extend or ensure its design life is not limited. The aim of this paper is to provide a state-of-the-art review of various strengthening and repair methods for RC columns proposed by different researchers in the last two decades. The scope of this review paper is limited to jacketing techniques for strengthening and/or repairing both normal- and high-strength RC columns. The paper also identifies potential research gaps and outlines the future direction of research into the strengthening and repair of RC columns.

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“…RC columns can be strengthened with either partial or continuous FRP wrapping in the potential plastic hinge zones at the top and bottom, or along the full height (Parvin and Brighton 2014). Numerous studies have concluded that the FRP wrapping of concrete columns can significantly enhance both strength and ductility (Parvin and Wang 2002, Ozcan et al 2008, Lam and Teng 2009, ElSouri and Harajli 2011). …”

Section: Frp-strengthened Rc Columnsmentioning

confidence: 99%

A review of FRP strengthened concrete structures under extreme loading

Chen¹,

Xie

Tao

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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Many concrete structures are vulnerable to extreme loadings such as accidental impact, terrorist attack and earthquake disasters. Retrofitting of existing concrete structures for enhanced performance under these loadings has been an important topic of research for a long time, especially since the 911 terrorist attack. Among the different retrofitting techniques, external bonding of fibre reinforced polymer (FRP) composites has been a popular one. This paper presents a brief review of recent research on FRP strengthened concrete structures under blast, impact, earthquake and cyclic loading.

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Seismic Repair and Strengthening of Lap Splices in RC Columns: Carbon Fiber–Reinforced Polymer versus Steel Confinement

Cited by 45 publications

References 4 publications

Bond behaviour of substandard splices in RC beams externally confined with CFRP

Bond behaviour of substandard splices in RC beams externally confined with CFRP

Strengthening and Repair of Reinforced Concrete Columns by Jacketing: State-of-the-Art Review

A review of FRP strengthened concrete structures under extreme loading

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