Behavior of FRP rods under uniaxial tensile strength with multiple materials as an alternative to steel rebar

Attia, Mohamed F.; Ahmed, Osama M.; Kobesy, Osama; Malek, Abdel Salam

doi:10.1016/j.cscm.2022.e01241

Cited by 9 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bars fabricated from fiberreinforced polymers (FRP) are preferred in such cases due to their high tensile strength, stiffness, corrosion and chemical resistance [2,3]. However, the tensile behavior of FRP rebars is characterized by a linear elastic stress-strain relationship up to failure, which causes concrete beams reinforced with FRP bars to exhibit brittle failure without warning [4][5][6]. Most design codes such as the American design guidelines are recommending to design the maximum moment section of concrete beams reinforced by FRP rebar to be over-reinforced since the nonlinear behavior of concrete in a compression zone can sustain a limited degree of deformability which may lead to a less catastrophic failure [7].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Investigation of FRP Reinforced Concrete Beams in Flexure

Refaai,

El-Mahdy,

Hamdy

2024

Engineering Research Journal (Shoubra)

View full text Add to dashboard Cite

Rebars fabricated from Fiber-Reinforced Polymers (FRP) are innovative materials utilized as an alternative to traditional steel reinforcement rebars in reinforced concrete structures to overcome corrosion problems especially in harsh and aggressive environments. FRP rebars manufactured from glass or basalt fibers embedded in a polymer matrix have high tensile strength, stiffness and enhanced durability. Also, FRP rebars have moderate costs. This research investigates experimentally the flexural performance of FRP-reinforced concrete beams. In the experimental program, two concrete beams reinforced by glass and basalt FRP bars were tested under a four-point flexural test until failure. Both the failure load, the failure mechanism and the mid-span deflection of the tested beams are presented and discussed. The experimental investigation showed that the major failure mode of the tested beams reinforced by FRP bars is crushing of concrete at the top substrate. Additionally, theoretical analysis of the ultimate flexural capacity and the failure loads were computed using American design guidelines and were found to be in good agreement with the experimental results.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Investigation of FRP Reinforced Concrete Beams in Flexure

Refaai,

El-Mahdy,

Hamdy

2024

Engineering Research Journal (Shoubra)

View full text Add to dashboard Cite

show abstract

“…The durability of a reinforced concrete (RC) structure is associated with many factors [1][2][3][4], and most of them are related to the corrosion of steel reinforcement bars. This is a general problem that can affect the integrity of assets built to last for extended service life periods.…”

Section: Introductionmentioning

confidence: 99%

Making a Case for Hybrid GFRP-Steel Reinforcement System in Concrete Beams: An Overview

2023

View full text Add to dashboard Cite

Ageing concrete infrastructures are known to be facing deterioration, especially regarding the corrosion of their reinforcing steel. As a solution, glass fibre-reinforced plastic (GFRP) bars are now considered a reinforcement alternative to conventional steel, and design codes now exist for designing GFRP-RC structures. However, there is a need to improve on addressing the limited plastic yield in GFRPs. Consequently, it is suggested that a hybrid steel–GFRP RC system can enhance the mechanical performance of flexure beams up to the required standard and, at the same time, address the durability concerns of steel-only RC beams. This overview presents the studies conducted to enhance the performance of hybrid GFRP–steel RC beams by reviewing the analytical models proposed to improve the various aspects of reinforcement design. The models consider mechanical effects such as ductility, crack width, flexure and shear, and the physical effects such as thermal stability when exposed to the temperature. Though the evidence reviewed supports the viability of the hybrid GFRP–steel reinforcing system to address ductility, much is still required in the area of research, as highlighted in the future outlook.

show abstract

“…According to several studies, FRP has many advantages including high tensile resistance. Furthermore, when FRP is applied to RC members, it improves rehabilitation performance, durability, and cost-effectiveness [14,15]. Glass-fiber-reinforced polymer (GFRP) is the most suited FRP reinforcement for a variety of civil engineering applications because glass fibers offer the highest temperature resistance, the highest strength, and the lowest cost [16].…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of RC Beams Strengthened with GFRP Laminate and Retrofitting with Novelty of Adhesive Material

Rageh¹,

El-Mandouh

Elmasry³

et al. 2022

Buildings

View full text Add to dashboard Cite

Two unique approaches were proposed to strengthen the bond between the glass fiber reinforcement polymer (GFRP) and the RC concrete surfaces. The two bonding materials are epoxy (EP) and geopolymer (GPP) with different ratios of short glass fibers (SGF). The experimental program includes seven reinforced concrete (RC) beams that have the same cross-section (150 mm × 200 mm) and are 1500 mm in length. The first beam is the control beam (B0-Control). The next three beams B1-0-GPP, B2-0.6-GPP, and B3-1.2-GPP have GPP with SGF ratios of 0%, 0.6%, and 1.2%, respectively. The last three beams B4-0-EP, B5-0.6-EP, and B6-1.2-EP have EP with SGF ratios of 0%, 0.6%, and 1.2%, respectively. The results show that the failure loads of beams B1-0-GPP, B2-0.60-GPP, and B3-1.2-GPP are greater than the control beam B0-Control by approximately 20.80%, 25.60%, and 31.40%, respectively, whereas the failure loads of beams B4-0-EP, B5-0.6-EP, and B6-1.2-EP are greater than the B0-Control by approximately 16.90%, 26.90%, and 26.10%, respectively; it is also noted that debonding occurs. In addition to the adhesive material, GPP has a great effect on increasing the beam’s failure load capacity due to the enhanced interfacial bond shear strength. Additionally, a finite-element program ABAQUS is performed to verify the experimental results.

show abstract

Behavior of FRP rods under uniaxial tensile strength with multiple materials as an alternative to steel rebar

Cited by 9 publications

References 37 publications

Experimental and Analytical Investigation of FRP Reinforced Concrete Beams in Flexure

Experimental and Analytical Investigation of FRP Reinforced Concrete Beams in Flexure

Making a Case for Hybrid GFRP-Steel Reinforcement System in Concrete Beams: An Overview

Flexural Behavior of RC Beams Strengthened with GFRP Laminate and Retrofitting with Novelty of Adhesive Material

Contact Info

Product

Resources

About