General behavior of t– section RC beams strengthened with epoxy–bonded carbon strands

Soliman, Judy M. I.

doi:10.15406/mojce.2018.04.00121

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…This makes this type of beam preferable and more economical compared to the isolated T-beam because of the chance of a decrease in the amount of concrete. Few studies have been done on the shear strengthening and rehabilitating with CFRP for RC T-beams [4][5][6][7][16][17][18][19]. Bae et al [16] examined the action of large-scale concrete bridge girders reinforced in shear with externally bonded CFRPs sheets using eight full-scale RC T-beams.…”

Section: Introductionmentioning

confidence: 99%

“…The highest CFRPs shear contribution was found in beams with a shear span-to-depth ratio of 3.0, and the anchorage method which consisted of anchors made of the same CFRPs as the laminates worked well. Soliman [18] studied experimentally the shear behavior of five RC T-beams. Different spacing of CFRPs strands sum per strip and spacing between strips were the main factors in the study.…”

Section: Introductionmentioning

confidence: 99%

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Shear strengthening and rehabilitating of reinforced concrete T-beams using externally carbon fiber reinforced polymer sheets

Beramly¹,

Jaber²,

Katkhuda³

et al. 2022

J Appl Eng Science

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The shear behavior of reinforced concrete (RC) T-beams using externally bonded carbon fiber-reinforced polymers (CFRPs) composites is investigated experimentally and theoretically in this research. Nine RC T-beams were cast and tested under monotonic one-point loading. The variables used in this study are: the situation of specimens (strengthened or rehabilitated); type of CFRPs material (laminate or sheet); and the CFRPs configuration (inclined or horizontal). The experimental results were compared to theoretical results from nonlinear finite element (FE) models for T-beams using ABAQUS software. The experimental results showed that using different CFRPs materials in various configurations effectively improved shear capacity for strengthening and rehabilitating RC T-beams. Compared to the control beam, the three schemes used to strengthen the shear of RC T-beams were successful in increasing the maximum load capacity by a range of 13.6 to 36.4%, and by 4.6 to 27.3% for rehabilitate T-beams. The included horizontal strips of CFRPs laminates achieved the highest increase in the shear capacity for strengthened T-beams. While, for the rehabilitated T-beams the results showed that the CFRP scheme that included full wrap of the web with CFRPs sheets was the best. A good agreement was found between the experimental and theoretical results. The differences in the ultimate loads and mid-span deflections were in the range of 0.33% to 26%, and 0.32% to 6.6%, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Shear strengthening and rehabilitating of reinforced concrete T-beams using externally carbon fiber reinforced polymer sheets

Beramly¹,

Jaber²,

Katkhuda³

et al. 2022

J Appl Eng Science

View full text Add to dashboard Cite

show abstract

“…Carbon fiber reinforced polymer (CFRP) composites proved their efficiency in strengthening concrete elements [1]. Previous studies focused on the flexural strengthening [2,3] and shear strengthening of RC rectangle sections [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], T-beams [23][24][25][26][27][28][29][30][31][32], and prestressed beams [33] using externally bonded CFRP. The results indicated that using CFRP in different schemes improved the shear strength, as the capacity increased with the increase of the number of CFRP layers.…”

Section: Introduction 1literature Overviewmentioning

confidence: 99%

Influence of Externally Bonded CFRP on the Shear Behavior of Strengthened and Rehabilitated Reinforced Concrete T-Beams Containing Shear Stirrups

Abdel-Jaber

2021

Fibers

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This study aims to investigate the effect of using externally bonded carbon fiber reinforced polymer (CFRP) on the strengthening and rehabilitation of reinforced concrete (RC) T-beams reinforced with steel stirrups. Three configurations of CFRP were used: 45° inclined strips, horizontal straight strips, and U-wrapped sheets. A total of 19 specimens of strengthened and preloaded RC T-beams were experimentally tested. The experimental results were compared with the theoretical values determined according to the ACI 440.2R−17 code. The results proved that all beams containing CFRP recorded higher strength than the control sample, regardless of whether the beams were tested for strengthening or rehabilitation purposes. The horizontal straight strips of the CFRP schemes recorded the highest enhancement in the shear capacity, followed by the U-wrapped sheets and inclined strips. Moreover, the ACI 440.2R−17 code overestimated the capacities of some samples.

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Computational assessment regarding structural rehabilitation of a reinforced concrete decanter tank

Covatariu,

Filip,

Covatariu

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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The article describes the analysis of an industrial structure (reinforced concrete decanter tank for the drinking water’s storage in the Iasi – Romania area) in order to justify the proposals for structural rehabilitation to ensure structural stability. In this regard, a computational model was created in Graitec Advanced Design, using the physico-mechanical characteristics of the materials (concrete, reinforcement) from the initial design. Subsequently, using the data obtained from the technical assessment report and the non-destructive tests carried out on the structural elements, it was found a depreciation of the concrete grade (C25/30 → C16/20), at the current stage. At this stage (the structure’s service state) a modelling of the degraded structure was achieved by comparing the results obtained by Graitec Advanced Design and Axis VM, in order to realise an extended structural analysis between initial and current state. A solution for the rehabilitation of degraded elements using polymeric composite materials reinforced with carbon fibers was proposed, which was validated by the Sika CarboDur Composite systems (software program for the design of consolidation solutions).

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General behavior of t– section RC beams strengthened with epoxy–bonded carbon strands

Cited by 4 publications

References 2 publications

Shear strengthening and rehabilitating of reinforced concrete T-beams using externally carbon fiber reinforced polymer sheets

Shear strengthening and rehabilitating of reinforced concrete T-beams using externally carbon fiber reinforced polymer sheets

Influence of Externally Bonded CFRP on the Shear Behavior of Strengthened and Rehabilitated Reinforced Concrete T-Beams Containing Shear Stirrups

Computational assessment regarding structural rehabilitation of a reinforced concrete decanter tank

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