Numerical Investigation and Cost Analysis of FRP-Concrete Unidirectional Hybrid Slabs

Mahboob, Amir; Eskenati, Amir Reza; Moradalizadeh, Soheil

doi:10.2478/ijame-2021-0056

Cited by 7 publications

(6 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cracks appeared in the slab but did not penetrate the total slab depth [12]. Hybrid concrete slabs were studied and examined, where FRP was used as CFRP, GFRP, and AFRP sheets, and they were connected to the concrete by a glass fiber mesh, as the GFRP gave the best results In terms of the load-bearing capacity in the optimum design, And it has a lower cost for casting than other models [13]. Using FRP with carbon nanotube-reinforced resins will raise stiffness and ductility by 100 %, and a nearly 13 % increase in the axial and flexural strength of specimens [14].…”

Section: Introductionmentioning

confidence: 99%

Behavior and Load Capacity of Concrete Slab Reinforced by CFRP Bar and Strengthening by CFRP Laminates

Medhlom,

Abed

2023

Civil and Environmental Engineering

View full text Add to dashboard Cite

The most common FRP materials used are carbon fiber reinforced polymers (CFRPs), and glass fiber reinforced polymers (GFRPs). The use of CFRPs has grown rapidly in the construction industry, specifically in structural retrofitting, due to their strengthening property of CFRP. CFRPs are moreover high strength, lightweight, noncorrosive, and easy-to-install materials. In the present study, six reinforced concrete slab specimens included two control specimens reinforced by traditional steel reinforcements and the other reinforced by carbon fiber reinforced polymer CFRP bars without strengthening by laminated CFRP strips. The remaining four specimens are interiorly reinforced by CFRP bars and strengthened by CFRP laminates strips with different scheme layouts named Type 1 and Type 2. The specimens were tested under a uniformly distributed load applied at the top surface area of each specimen up to failure. The parameters considered in the present study are the amount of CFRP bars and CFRP laminates layout. Test results indicated that the strength carrying capacity and failure mode of tested specimens differ based on the steel reinforcement type and the presence of CFRP laminates layout.

show abstract

Section: Introductionmentioning

confidence: 99%

Behavior and Load Capacity of Concrete Slab Reinforced by CFRP Bar and Strengthening by CFRP Laminates

Medhlom,

Abed

2023

Civil and Environmental Engineering

View full text Add to dashboard Cite

show abstract

“…Model was capable of accurately predicting the performance and the load carrying capacity of composite slabs. Another procedure to implement 3D non-linear FEM models was introduced to simulate the longitudinal slip mechanics of composite slabs in ''pull-out'' tests [10].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Investigation of the Omega-Shaped Hybrid CFRP Sheet - Concrete Slab System: Experimental, Numerical and Analytical study

Bakhtiari,

Harati

2023

jcer

View full text Add to dashboard Cite

Fiber Reinforced Polymer (FRP) composites have been broadly applied in substitution of steel members at rehabilitation interventions thanks to their lightweight, high strength, and high corrosion resistance. Producing novel FRP-concrete hybrid structures is the next step researchers are dealing with. In this context, the present study focuses on the numerical and analytical modeling of the experimentally obtained response of hybrid FRP-concrete slabs subjected to three points bending tests. The analyzed hybrid elements consisted of an omega shape Carbon Reinforced Polymer (CFRP) sheet on which a concrete layer was cast forming a unidirectional slab member. A Glass Fiber Reinforced Polymer (GFRP) fabric was bonded to the CFRP sheet and embedded into the concrete block to provide a connection between CFRP and concrete in one of the specimens. Simulation results showed agreement with the experimental response in terms of load-displacement curve, concrete plastic strain and failure mode. After validating the model, alternative designs (width, height, and thickness of CFRP sheet and concrete block on it) were numerically tested to study the influence of the geometry of the structural system on the load-bearing capacity. Lastly, analytical formulation assuming total compatibility and based on Euler-Bernoulli theory were implemented and contrasted with the experimental response. Overall results pointed out that the optimum design would be the one with increased height of both concrete and CFRP. For this improved configuration, the load-bearing capacity was increased by up to 44%.

show abstract

“…The CAN/CSA S806 standards [17] have clarified that the reinforcement elements of FRP used in the compression zone of concrete are deemed to possess negligible compressive strength and rigidity with regard to construction purposes. ACI 440.2R does not endorse the utilization of FRPs for compression [16] In view of the potential occurrence of premature defects [18], [19], such as the buckling of fibers on a small scale, unsupported or poorly preserved laminates buckling, and insufficient anchoring of substrates and FRP surfaces, alongside the unreliability of the compressive strength of laminates, it is crucial to address these issues [20], [21]. The micro buckling problem may arise from inadequate quality control of the FRP production, which might be attributed to the presence of ACI 440.2R vacuum in the resin [22].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Composite Bars and FRP Panels for Seismic Bridge Decks

Bakhtiari,

Harati

2023

jcer

View full text Add to dashboard Cite

Seismic Strengthening offers a cost-effective and sustainable solution for constructing bridges in seismic zones. In these rehabilitation interventions, Fiber Reinforced Polymer (FRP) composites are often used instead of steel members due to their lightweight nature, high strength, and excellent corrosion resistance. Researchers are now focusing on creating innovative FRP-concrete hybrid structures. This study specifically investigates the numerical modeling of the response of a hybrid FRP-concrete jacket bridge pier subjected to quasi-static tests. The Finite Element Method (FEM) results demonstrated a significant correlation with the experimental response, particularly in terms of the load-displacement curve failure mode. Once the model was validated, various alternative designs were numerically tested to evaluate the impact of each model on the load-bearing capacity. These designs included altering the height of the CFRP sheet, adjusting the height and congestion of the CFRP bar, and comparing the performance of the concrete jacket with and without the CFRP sheet. After reinforcing the CFRP sheets and incorporating Near-Surface-Mounted (NSM)-CFRP bars, the reinforcement system, along with the new concrete jacket, effectively transferred the integrity of the broken pier area and maintained a constant load-bearing capacity for the bridge pier. However, when the CFRP sheet was added to the aforementioned system, the load capacity of the bridge pier increased by more than 60%. Therefore, it can be concluded that seismic enhancement techniques utilizing CFRP sheets and mounted NSM-CFRP bars are successful in enhancing the strength and resilience of the concrete bridge pier.

show abstract

Numerical Investigation and Cost Analysis of FRP-Concrete Unidirectional Hybrid Slabs

Cited by 7 publications

References 41 publications

Behavior and Load Capacity of Concrete Slab Reinforced by CFRP Bar and Strengthening by CFRP Laminates

Behavior and Load Capacity of Concrete Slab Reinforced by CFRP Bar and Strengthening by CFRP Laminates

Comprehensive Investigation of the Omega-Shaped Hybrid CFRP Sheet - Concrete Slab System: Experimental, Numerical and Analytical study

Assessment of Composite Bars and FRP Panels for Seismic Bridge Decks

Contact Info

Product

Resources

About