Evaluation of deflection in concrete members reinforced with fibre reinforced polymer (FRP) bars

Abdalla, Hany

doi:10.1016/s0263-8223(01)00188-x

Cited by 114 publications

(52 citation statements)

References 3 publications

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“…Area of steel reinforcement B Width of cross-section β 1 A strength reduction factor taken as 0.85 for concrete strength up to and including 27.6 MPa. For strength above 27.6 MPa, this factor is reduced continuously at a rate of 0.05 per each 6.9 MPa of strength in excess of 27.6…”

Section: A Smentioning

confidence: 99%

Flexural Behavior of Continuous GFRP Reinforced Concrete Beams

Habeeb

Ashour

2008

J. Compos. Constr.

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Section: A Smentioning

confidence: 99%

Flexural Behavior of Continuous GFRP Reinforced Concrete Beams

Habeeb

Ashour

2008

J. Compos. Constr.

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“…Most of the formulas [1,3,4,[7][8][9][10] proposed to estimate the deflection of FRP reinforced concrete beams after cracking were developed by modifying the Branson formula used for steel reinforced concrete beams. For example, ACI committee 440 [3] suggested the following expression for the effective moment of inertia, I e : (8) (10) where L = the span of the beam, a = shear span, E c = concrete elastic modulus and P = total applied load at which deflection is calculated.…”

Section: Prediction Of Deflectionsmentioning

confidence: 99%

“…Although many experimental investigations [1,4,[7][8][9][10][11] were conducted on FRP reinforced concrete beams with rectangular section, there has been very little research [5] into the behaviour of concrete flanged beams reinforced with FRP bars. Grace et al [5] tested seven continuous T-section beams reinforced with different combinations of steel, CFRP and glass fibre reinforced polymer (GFRP) as longitudinal bars and stirrups.…”

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confidence: 99%

Tests of concrete flanged beams reinforced with CFRP bars

Ashour¹,

Family²

2006

Magazine of Concrete Research

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Tests results of three flanged and two rectangular cross-section concrete beams reinforced with carbon fibre reinforced polymer (CFRP) bars are reported. In addition, a companion concrete flanged beam reinforced with steel bars is tested for comparison purposes. The amount of CFRP reinforcement used and flange thickness were the main parameters investigated in the test specimens. One CFRP reinforced concrete rectangular beam exhibited concrete crushing failure mode, whereas the other four CFRP reinforced concrete beams failed due to tensile rupture of CFRP bars. The ACI 440 design guide for FRP reinforced concrete members underestimated the moment capacity of beams failed due to CFRP tensile rupture and reasonably predicted deflections of the beams tested.A simplified theoretical analysis for estimating the moment capacity of concrete flanged beams reinforced with FRP bars was developed. The experimental moment capacity of the CFRP reinforced concrete beams tested compared favourably with that predicted by the theoretical analysis developed.

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“…Significant amount of research was carried out on the behaviour of FRP RC beams under static loading [12][13][14][15][16][17][18][19]. Previous research mostly investigated the behaviour of doubly reinforced FRP RC beams with CFRP or GFRP bars.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the behaviour of concrete beams reinforced with GFRP bars under static and impact loading

Goldston

Remennikov

Sheikh

2016

Engineering Structures

121

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Composite materials, including Fibre Reinforced Polymer (FRP) bars, have been gaining momentum as alternatives to traditional steel reinforcements in civil and structural engineering sectors. FRP materials are non-corrosive, non-conductive, and lightweight and possess high longitudinal tensile strength, which are advantageous for their use in civil infrastructure. This paper presents the results of an experimental investigation into the effects of the use of glass FRP (GFRP) bars as internal reinforcement on the behaviour of concrete beams. Both static and dynamic (impact) behaviours of the beam have been investigated. Twelve GFRP reinforced concrete (RC) beams were designed, cast and tested. Six GFRP RC beams were tested under static loading to examine the failure modes and associated energy absorption capacities. The remaining six GFRP RC beams were tested under impact loading using a drop hammer machine at the University of Wollongong. GFRP RC beams with higher reinforcement ratio showed higher post cracking bending stiffness and experienced flexural-critical failure under static loading. However, GFRP RC beams under impact loading, regardless of their shear capacity, experienced a "shear plug" type of failure around the impact zone. Energy absorption capacities of beams were determined. The average dynamic amplification factor was calculated as 1.15, indicating higher dynamic moment capacities compared to static moment capacities (15-20% increase). Reinforcement ratio and the strength of concrete influenced the behaviour of GFRP RC beams. -------------------------------------------------------- * Corresponding authors Research Highlights Flexural behaviour of GFRP RC beams has been investigated. Twelve GFRP reinforced concrete (RC) beams were designed, cast and tested. Six GFRP RC beams were tested under static loading to examine the failure modes and associated energy absorption capacities. The remaining six GFRP RC beams were tested under impact loading using a drop hammer machine at the University of Wollongong. GFRP RC beams with higher reinforcement ratio showed higher post cracking bending stiffness and experienced flexuralcritical failure under static loading. However, GFRP RC beams under impact loading, regardless of their shear capacity, experienced a "shear plug" type of failure around the impact zone. Energy absorption capacities of beams were determined. The average dynamic amplification factor was calculated as 1.15, indicating higher dynamic moment capacities compared to static moment capacities (15-20% increase). Reinforcement ratio and the strength of concrete influenced the behaviour of GFRP RC beams.

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Evaluation of deflection in concrete members reinforced with fibre reinforced polymer (FRP) bars

Cited by 114 publications

References 3 publications

Flexural Behavior of Continuous GFRP Reinforced Concrete Beams

Flexural Behavior of Continuous GFRP Reinforced Concrete Beams

Tests of concrete flanged beams reinforced with CFRP bars

Experimental investigation of the behaviour of concrete beams reinforced with GFRP bars under static and impact loading

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