Axial performance of hollow concrete columns reinforced with GFRP composite bars with different reinforcement ratios

Alajarmeh, Omar; Ferdous, Wahid; Benmokrane, Brahim; Karunasena, Warna; Mendis, Priyan

doi:10.1016/j.compstruct.2019.01.096

Cited by 48 publications

(57 citation statements)

References 26 publications

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“…Detailed information and experimental results can be found in AlAjarmeh et al 15,16 . Table shows the test results for the 14 concrete columns under concentric compression loading until failure, which used to evaluate the effect of the aforementioned parameters (i/o, , , and ′ ).…”

Section: Summary Of the Experimental Program And Resultsmentioning

confidence: 99%

“…Therefore, in another study conducted by the authors 16 , the GFRP-bar crushing strain ( ) was modeled using a very representative empirical equation based on and the ratio of the total 15 core area to bar area [ ], as presented in Eq. (13).…”

Section: Theory and Assumptionsmentioning

confidence: 99%

“…Moreover, the enhancement of the confined strength and deformation capacity of the HCCs was proportional to the increase in / . They found, on the other hand, that the increase in increases the axial load capacity and, furthermore, longitudinal reinforcements proved the major contribution in lateral confinement 16 . In addition, a comprehensive experimental program has been conducted by testing large-scale GFRP-reinforced concrete columns to investigate the effects of other critical design parameters such as and ′ on the compressive behavior of HCCs and this work is now under review.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, Hadi et al 14 observed a 33% enhancement in ductility with GFRP-reinforced columns when the spacing between spirals was reduced from 60 mm (2.4 in) to 30 mm (1.2 in). These studies motivated investigation of the behavior of HCCs incorporating GFRP reinforcement, as pioneered by AlAjarmeh et al 15,16 . This study was the first to explore the potential of GFRP bars and spirals as reinforcing materials for hollow concrete columns to develop a high structural efficiency and corrosion resistant construction system.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A New Design-Oriented Model of Glass Fiber-Reinforced Polymer-Reinforced Hollow Concrete Columns

Alajarmeh¹,

Manalo²,

Benmokrane³

et al. 2020

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show abstract

Section: Summary Of the Experimental Program And Resultsmentioning

confidence: 99%

Section: Theory and Assumptionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A New Design-Oriented Model of Glass Fiber-Reinforced Polymer-Reinforced Hollow Concrete Columns

Alajarmeh¹,

Manalo²,

Benmokrane³

et al. 2020

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show abstract

“…e method of structure member strengthening with FRP is widely used and is one of the hotspots in the field of strengthening at present [10,11]. According to different types of fibers, it can be divided into carbon fiber (CFRP), glass fiber (GFRP) [12][13][14][15], aramid fiber (AFRP) [16], basalt fiber (BFRP) [17], hybrid fiber (HFRP) [18], and other strengthening methods. Among them, CFRP and GFRP strengthening methods are the most widely studied.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Bearing Capacity and Seismic Performance of Circular RC Columns Strengthened with Externally Wrapped Steel Plates

Zhou

Wang

et al. 2019

Advances in Civil Engineering

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Based on a practical project, the construction method of circular reinforced concrete (RC) columns strengthened with externally wrapped steel plates was introduced in this paper. In order to study the bearing capacity and seismic performance of circular RC columns after strengthening, a formula for calculating the bearing capacity of circular RC columns strengthened with externally wrapped steel plates was derived, with reference to the Code for Design of Strengthening Concrete Structure. Through ABAQUS software, the vertical monotone static loading analysis and the horizontal low-cyclic reversed loading analysis were carried out, respectively, before and after the strengthening of the full-size RC columns in this project. The results showed that the bearing capacity of the normal section of the RC column after strengthening was about 80% higher than that before strengthening, and the results of FEM software were in accord with the calculation results of theoretical formula to some degree. Under horizontal low-cyclic reversed loading, the columns after strengthening had both plumper hysteresis curves and higher ductility factors and equivalent viscous damping coefficient than those before strengthening, indicating the energy dissipation capacity, plastic deformation capacity, and seismic performance of the RC columns after strengthening were all obviously improved.

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Experimental investigation on the use of glass fiber reinforced polymer reinforcement in hollow‐core circular concrete columns

Ahmad

Sheikh

Hadi

2021

Structural Concrete

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This paper presents the results of an experimental investigation on the behavior of glass fiber reinforced polymer (GFRP) bar-reinforced hollow-core (GFRP-HC) circular concrete specimens under concentric, 25 mm and 50 mm eccentric axial loading and four-point bending. The main parameters investigated include the type of reinforcing bars, pitch of the helices and loading conditions. The test matrix of this study consists of 12 specimens, among which nine specimens (850 mm high) were tested under concentric and eccentric axial loading and the remaining three specimens (1500 mm long) were tested under four-point bending. The specimens were circular in cross-section with an outer diameter of 214 mm and an inner circular hole diameter of 56 mm. The experimental results showed that, for the similar amount of reinforcement, steel bar-reinforced hollow-core (steel-HC) specimens sustained higher loads than the GFRP-HC specimens under different loading conditions. Also, the steel-HC specimens achieved higher ductility than the GFRP-HC specimens under 50 mm eccentric axial loading and four-point bending. However, under concentric and 25 mm eccentric axial loading, the GFRP-HC specimens achieved higher ductility than the steel-HC specimens. The close pitch of the GFRP helices significantly enhanced the load carrying capacity and ductility of the GFRP-HC specimens. K E Y W O R D Sconcentric axial load, eccentric axial load, glass fiber reinforced polymer bar, glass fiber reinforced polymer helix, hollow-core columns, reinforced concrete

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Axial performance of hollow concrete columns reinforced with GFRP composite bars with different reinforcement ratios

Cited by 48 publications

References 26 publications

A New Design-Oriented Model of Glass Fiber-Reinforced Polymer-Reinforced Hollow Concrete Columns

A New Design-Oriented Model of Glass Fiber-Reinforced Polymer-Reinforced Hollow Concrete Columns

Analysis of Bearing Capacity and Seismic Performance of Circular RC Columns Strengthened with Externally Wrapped Steel Plates

Experimental investigation on the use of glass fiber reinforced polymer reinforcement in hollow‐core circular concrete columns

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