A compression field based model to assess the shear strength of concrete beams reinforced with longitudinal FRP bars

Dhahir, Mohammed K.; Nadir, Wissam

doi:10.1016/j.conbuildmat.2018.10.036

Cited by 19 publications

(7 citation statements)

References 26 publications

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“…As shown in Figure 12 , the breaking of the specimens in all cases was as expected [ 17 , 18 ], perpendicular to the dimension of the force exerted on them. In all three cases (a, b and c), the fracture was at the edge of the specimens, where it was the most sensitive point.…”

Section: Resultssupporting

confidence: 72%

Polymer Composite Materials Fiber-Reinforced for the Reinforcement/Repair of Concrete Structures

2020

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The present paper deals with the use of polymeric matrix composite materials reinforced with carbon fiber as concrete shear reinforcement materials. Accordingly, cement specimens were manufactured and coated with various types of carbon fabrics and epoxy resin in liquid and solid form (paste). Additionally, composite materials of epoxy resin matrix reinforced with carbon fiber fabrics were manufactured. In all the specimens, the mechanical properties were estimated; the cement samples coated with composite materials of epoxy resin matrix reinforced with carbon fiber fabrics were tested for compressive strength, while the other specimens were tested for shear and bending strength. The specimens were subjected to artificial aging through heat treatment for 8, 12 and 16 days. During the process of artificial aging, the temperature in the chamber reached the range of 65–75 °C. These composite materials exhibited high mechanical properties combined with adaptability. Both an external deterioration of the materials as well as a reduction in mechanical properties during their artificial aging heat treatment were observed. This was shown in the specimens that were not subjected to artificial aging, with an applied compression strength of 74 MPa, and after the artificial aging, there was a decrease of ~7%, with the compression strength being reduced to 68 MPa.

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Section: Resultssupporting

confidence: 72%

Polymer Composite Materials Fiber-Reinforced for the Reinforcement/Repair of Concrete Structures

2020

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“…Corrosion problems in infrastructure impose huge expenses on rehabilitating structures worldwide [1]. Furthermore, exposing structures (e.g., water treatment facilities, marine structures, and bridges) to extreme corrosion compromises their structure and, therefore, reduces their service life tremendously [2]. Fiberreinforced polymer (FRP) bars are a promising substitute for traditional reinforcing steel bars [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, sudden and brittle failure may occur in these buildings without imminent warning [3,8]. Tis highlights the signifcance of appropriately evaluating the shear strength mechanism in FRP-reinforced concrete members [2]. Also, research has been conducted on using basalt fber-reinforced polymer (BFRP) in short beams so that ten beams with a length of 2.0 meters and a rectangular section with a width of 140 mm and variable height were tested under a four-point loading confguration.…”

Section: Introductionmentioning

confidence: 99%

Firefly Algorithm-Based Artificial Neural Network to Predict the Shear Strength in FRP-Reinforced Concrete Beams

Nikoo

Aminnejad

Lork

2023

Advances in Civil Engineering

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The shear strength of fiber-reinforced polymer (FRP) reinforced concrete beams is often given a large safety margin by current construction requirements. Six characteristics are utilized as inputs to compute the shear strength of FRP-reinforced concrete beams. This study uses 198 samples from the literature to predict the shear strength of 139 training samples and 59 testing samples. Additionally, the ANN structure is optimized with the firefly algorithm. The FA-ANN model is also compared to ACI-440, CSA-S806, and BISE-99 codes, and the optimized model by Nehdi et al. Findings show that regarding the shear strength of FRP-reinforced concrete beams, the firefly algorithm-optimized model performs better than the other four models. Concerning accuracy, the coefficient of correlation, R2, was calculated as 0.961, while the average absolute error (AAE) is 0.22 for the shear strength of FRP-reinforced beams.

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“…The most widely used FRP reinforcement in the construction industry is made from glass (GFRP), carbon (CFRP) and aramid (AFRP), among which GFRP and AFRP are sensitive to the alkaline environment within concrete due to the poor alkali resistance of fibres [12], while CFRP is still far too expensive for normal RC structures [2,13]. More recently, basalt fibre reinforced polymer (BFRP) bars have been introduced to provide an alternative type of reinforcing material [14][15][16], which has a relatively lower cost with high accessibility and excellent resistance to acids, corrosion, high temperature, freeze-thaw cycles, vibration and impact loading [2,[17][18][19][20]. In addition, when under alkaline conditions, BFRP was found to perform better than GFRP and AFRP [21].…”

Section: Introductionmentioning

confidence: 99%

Shear behaviour of inorganic polymer concrete beams reinforced with basalt FRP bars and stirrups

Fan

Zhou

et al. 2021

Composite Structures

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A compression field based model to assess the shear strength of concrete beams reinforced with longitudinal FRP bars

Cited by 19 publications

References 26 publications

Polymer Composite Materials Fiber-Reinforced for the Reinforcement/Repair of Concrete Structures

Polymer Composite Materials Fiber-Reinforced for the Reinforcement/Repair of Concrete Structures

Firefly Algorithm-Based Artificial Neural Network to Predict the Shear Strength in FRP-Reinforced Concrete Beams

Shear behaviour of inorganic polymer concrete beams reinforced with basalt FRP bars and stirrups

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