Finite element analysis of strengthened RC beams in shear with aluminum plates

Abu-Obeidah, Adi; Hawileh, Rami A.; Abdalla, Jamal A.

doi:10.1016/j.compstruc.2014.10.009

Cited by 63 publications

(40 citation statements)

References 17 publications

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“…The recently developed aluminum alloys possess desirable characteristics that can overcome the deficiencies in steel and FRP. These alloys are economical, effective and easy to install as demonstrated by a preliminary study conducted by the authors [26][27][28] to proof the concept. To the best of the authors' knowledge, the use of AA plates as externally bonded strengthening material has not been investigated, yet.…”

Section: Introductionmentioning

confidence: 95%

Shear strengthening of reinforced concrete beams using externally-bonded aluminum alloy plates: An experimental study

Abdalla

Abu-Obeidah

Hawileh

et al. 2016

Construction and Building Materials

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Recently developed high strength Aluminum Alloys (AA) have desirable characteristics that make them attractive as externally bonded strengthening materials. This paper investigates the potential of using AA plates for shear strengthening of reinforced concrete (RC) beams. Five shear deficient RC beams were externally strengthened using AA plates with different orientations. It is observed that the shear capacity of the strengthened beams has increased in the range of 24%-89% compared to the un-strengthened beam. Shear capacity of the strengthened beams was also predicted using the ACI440, FIB14, TR55 and SMCFT design guidelines with the later one giving the most accurate predictions.

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Section: Introductionmentioning

confidence: 95%

Shear strengthening of reinforced concrete beams using externally-bonded aluminum alloy plates: An experimental study

Abdalla

Abu-Obeidah

Hawileh

et al. 2016

Construction and Building Materials

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“…Main applications of AAs in bridge structures include movable and floatable bridges, replacement of deteriorated bridge decks, and pedestrian bridges (Dey et al, 2016; Siwowski, 2006). In addition, using as strengthening reinforcements, it is authenticated that AAs have attractive properties which can overcome the deficiencies of FRPs in RC beams (Abdalla et al, 2016; Abu-Obeidah et al, 2015; Rasheed et al, 2017; Xing et al, 2018). More recently, the AAs of 6xxx series have also been used as reinforcement in concrete structures (Xing and Ozbulut, 2016).…”

Section: Prestressing System With Aluminum Alloys Tendonsmentioning

confidence: 99%

Feasibility and flexural behavior of RC beams prestressed with straight unbonded aluminum alloy tendons

Chang

Xing

Zhao

et al. 2020

Advances in Structural Engineering

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This paper investigates the feasibility and flexural behavior of reinforced concrete beams internally prestressed with straight unbonded aluminum alloy tendons by testing five partially prestressed beams and one reference beam. For each beam specimen, load-deflection curves, failure modes and cracking behavior, the relationship between load and strains in steel and prestressing aluminum alloy tendons were examined and analyzed. In particular, the effects of effective prestress, combined reinforcement index (CRI), and partial prestressing ratio (PPR) on flexure of concrete beams were discussed. The test results indicated that the spacing and width of concrete cracks of prestressed beams containing the same amount of bonded longitudinal steel reinforcement decreased with the increase of effective prestress, and the combined reinforcement index governs flexural behavior of the prestressed beams. The flexural crack width and displacement ductility exhibited a reduction with the increase of CRI. In addition, an analytical model was established to calculate the flexural strength and corresponding deflection at midspan of the concrete beams internally prestressed with unbonded aluminum alloy tendons by suggesting a new simplified curvature distribution, which is more accordant with the original curvature distribution. The proposed model provides a relatively good estimation of the flexural capacity and midspan deflection of the prestressed beams.

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“…Moreover, AA plates have been employed for the external strengthening of RC beams under shear, and the shear strength was approximately predicted by codes developed for the FRP of the ACI440, FIB14, TR55, and SMCFT standards [11]. A finite element model was developed and verified for the investigation of the behaviour and prediction of the performance of RC beams externally strengthened under shear using AA plates [12]. In previous studies, epoxy was used as the adhesive for the bonding of AA plates, and no studies have been conducted on the inorganic adhesive, with reference to the literature.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behaviour of Unbonded Posttensioned Concrete Beam Strengthened with Aluminium Alloy Plates

Chang

Zhou

2020

Mathematical Problems in Engineering

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Owing to their high corrosion resistance, aluminium alloy (AA) plates bonded with magnesium phosphate cement (MPC) are considered as a viable candidate for reinforcing inshore infrastructures that are subject to severe environmental conditions and vapor atmospheres. Therefore, the aim of this study is the evaluation of the flexural behaviour of simple beams that are strengthened using this technique. Six unbonded posttensioned concrete (UPC) beams with different reinforcement ratios are damaged by static loads and then repaired and strengthened using AA plates. The failures under two-point loading are then investigated. Thereafter, a simplified method is proposed for the evaluation of the flexural strength of a UPC beam strengthened by an AA plate with MPC. The flexural strengths of the six specimens increase by an average of 14%, and the displacement ductility factor decreases by an average of 34.14%. Moreover, the increase and decrease ratios are proportional and inversely proportional to the comprehensive reinforcement index, respectively. The influences of the three main factors on the flexural strength of the AA plate are determined: the increase in the stress of the unbonded tendons, stress at the midspan and slippage at the ends of the AA plate, and increase ratio of the flexural strength. It shows that the AA plates bonded with MPC can be used successfully in concrete strengthening.

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Finite element analysis of strengthened RC beams in shear with aluminum plates

Cited by 63 publications

References 17 publications

Shear strengthening of reinforced concrete beams using externally-bonded aluminum alloy plates: An experimental study

Shear strengthening of reinforced concrete beams using externally-bonded aluminum alloy plates: An experimental study

Feasibility and flexural behavior of RC beams prestressed with straight unbonded aluminum alloy tendons

Flexural Behaviour of Unbonded Posttensioned Concrete Beam Strengthened with Aluminium Alloy Plates

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