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Behavior of Concrete Slabs Reinforced with FRP Bars, Design and Analysis

Adimi, Alireza | 2021

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 54664 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Khaloo, Alireza
  7. Abstract:
  8. Despite extensive studies on the behavior of reinforced concrete slabs, especially those reinforced with steel rebars, no comprehensive studies have been conducted on the behavior of concrete slabs reinforced with FRP rebars. Therefore, there are some ambiguities regarding the tensile and compressive behavior of these rebars in the load-bearing capacity of reinforced concrete slabs (depending on their amount in the slab and their combination with steel rebars). Hence, in this study, in order to ensure the accuracy of numerical simulations, the numerical 3D simulation of a one-way concrete slab reinforced with tensile FRP rebars was performed using the finite element Abaqus software. Moreover, the effects of the type of FRP rebars (CFRP or GFRP), as well as their amount (depending on the number and diameter of FRP rebars), were evaluated on the vertical load-bearing capacity of the middle of concrete slabs. Moreover, with the 3D numerical simulation of the slab reinforced with tensile and compressive FRP rebars, the effect of using them simultaneously (compared to the use of only FRP rebars) was investigated on the vertical load-bearing capacity at the middle of the slab with respect to the compressive strength of the slab’s concrete. Eventually, the slab was numerically simulated reinforced with tensile steel and FRP rebars to study the effect of combining them (compared to the use of only FRP rebars) on the load-bearing capacity at the middle of the slab. The results of the studies revealed that the vertical load-bearing capacity of the slab reinforced with tensile CFRP rebars was much higher than that of the one reinforced with tensile GFRP rebars. Moreover, the vertical load-bearing capacity of the concrete slab reinforced with tensile FRP rebars increased with the number and diameter of the tensile FRP rebars. On the other hand, the reduction in the compressive strength of the one-way concrete slab decreased the load-bearing capacity of the concrete slab reinforced with FRP rebars. The simultaneous use of tensile and compressive FRP rebars (compared to using only tensile FRP rebars) had no significant effect on increasing the load-bearing capacity of the concrete slabs, especially those with high compressive strengths. Meanwhile, the combination of the tensile steel and FRP rebars (compared to only tensile FRP rebars) increased the vertical load-bearing capacity of the slab.
  9. Keywords:
  10. Reinforced Concrete ; Finite Element Method ; ABAQUS Software ; Concrete Reinforced Slabs ; Slab Vertical Load-Bearing Capacity ; Glass Fiber Reinfoced Polymer (GFRP) ; Fiber Reinforced Polymer (FRP) ; Carbon Fiber Reinforced Polymer (CFRP)

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