Shear Rehabilitation of RC Deep Beams using NSM CFRP Anchor Bars

Samad, Abdul; Hassen, Douread R.; Mohamad, Noridah; Attiyah, Ali N.; Jayaprakash, J.; Mendis, Priyan

doi:10.1051/matecconf/201710302010

Cited by 6 publications

(7 citation statements)

References 6 publications

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“…Table 5 shows the comparison of shear capacity between finite element and experimental results. From this table, the finite element results show good agreement with the experimental results (Samad et al, 2017). Fig.…”

Section: Deformation Diagramssupporting

confidence: 74%

“…11 shows the shear-deflection curve of analysed deep beams. This figure shows the sheardeflection profile from finite element analysis respect the experimental results (Samad et al, 2017).…”

Section: Deformation Diagramsmentioning

confidence: 90%

“…In this research, a three-dimensional nonlinear Finite Element Analysis (FEA) was conducted by using ANSYS V14. The dimensions and properties of experimental work conducted by Samad et al (2017) were used to analyze and validate the finite element analysis results.…”

Section: Finite Element Modellingmentioning

confidence: 99%

“…In this research, total four Deep beams having same design are tested with two possible strengthening schemes as shown in Fig. 1 by Samad et al (2017). The CFRP NSM anchoring bars are applied inside of the Deep beam to strengthen the beam for shear.…”

Section: Introductionmentioning

confidence: 99%

“…Some of the parameters are presented and discussed in this paper such as ultimate load, CFRP contribution to shear, modes of failure and load-deflection profile of CFRP NSM bars. Finally, all the results are gotten from finite element analysis by using ANSYS software are compared with the experimental results carried out by Samad et al (2017).…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear analysis of RC deep beams strengthened with NSM CFRP anchor bars

Hassen¹

2018

Int. j. adv. appl. sci.

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Studies on the effect of using externally bonded fiber reinforced polymer (FRP) laminates and near surface mounted (NSM) FRP bars on the shear strengthening of reinforced concrete (RC) beams has been widely conducted by various researchers globally. However, an innovative technique using NSM CFRP as anchor bars on the shear strengthening of RC deep beams has never been conducted. Current experimental work on NSM anchor bars has shown good enhancement in the shear capacity for the RC deep beams. This paper presents results obtained from the analytical model of the RC deep beams shear strengthened by NSM CFRP Anchor bars. The study comprises of developing four analytical models using finite element method software ANSYS Version 14. Results of the analytical model and experimental findings were compared for validation. All deep beams were simply supported and subjected to four point bending test with shear span to depth ratio av/d of 0.864. CFRP NSM bars of 5 mm diameter with 450 mm length and spaced at 100 mm (for beams R1 and R2) and 150 mm (for beams R3 and R4) were anchors into their respective beams. Similar properties from the experimental work were adopted for the analytical model. Results from the analytical model such as crack pattern, failure mode and load displacement profile were observed to have good agreement with the experimental findings. Shear capacity shows proximity between the analytical model and experimental results observed at 15 % for beams R1 and R2, and 7 % for beams R3 and R4.

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Section: Deformation Diagramssupporting

confidence: 74%

Section: Deformation Diagramsmentioning

confidence: 90%

Section: Finite Element Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nonlinear analysis of RC deep beams strengthened with NSM CFRP anchor bars

Hassen¹

2018

Int. j. adv. appl. sci.

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A review on performance of near‐surface mounted‐carbon fiber‐reinforced polymer laminates bonded into slits

et al. 2022

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The near‐surface mounted (NSM) technique over the years has become the most popular retrofitting technique for obtaining enhanced strength and durability in reinforced concrete structural elements. It is mostly preferred for its easy application of composites in grooves cut on specimen concrete cover. The specimen surface is prepared with slits where polymer composite laminates are placed along with adhesives as filler to attain good bonding between laminates and the surface. The paper reviews the NSM carbon fiber reinforced polymer technique and its ascendancies over externally bonded composites retrofitting approach. Members strengthened with the NSM technique show enhanced shear strength, flexural capacity, and fatigue resistance. Motivated by the urge of gaining knowledge on various advantages of this emerging method, the paper reviews the load‐carrying capacity, failure modes, durability, and bonding behavior along with the enhancement ascertained in shear, flexure, and fatigue resistance by the NSM technique. In addition to offering guidance on the experimental and computational investigations on the overall behavior of the technique, the present review also intends to encourage further development in the near‐surface mounted carbon fiber polymer strengthening system of retrofit.

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Experimental study of RC deep beams strengthened by NSM steel bars

Al-Issawi

Kamonna

2020

Materials Today: Proceedings

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Shear Rehabilitation of RC Deep Beams using NSM CFRP Anchor Bars

Cited by 6 publications

References 6 publications

Nonlinear analysis of RC deep beams strengthened with NSM CFRP anchor bars

Nonlinear analysis of RC deep beams strengthened with NSM CFRP anchor bars

A review on performance of near‐surface mounted‐carbon fiber‐reinforced polymer laminates bonded into slits

Experimental study of RC deep beams strengthened by NSM steel bars

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