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Prestressing RC Beams with Near Surface Mounting (NSM) Fiber Reinforced Polymers (FRP) and/or Iron-Based Shape Memory Alloy (Fe-SMA) Rods

Raad, Janet
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1544176799414432

Abstract Details

2018, Master of Science, University of Toledo, Civil Engineering.
The present study involves flexural strengthening of reinforced concrete (RC) beams by prestressed fiber reinforced polymers (FRP) and iron-based shape memory alloys (Fe-SMAs) using near surface mounted (NSM) technique. The ANSYS Program Design Language (APDL) was employed to generate a finite element analysis (FEA) beam model which was validated using the data from an existing experimental study in the literature. The beam FEA model and experimental results were in a good agreement. Parameters considered were internal and external reinforcement ratios, bond length, concrete strength, and NSM rod material type under three pre-stressing levels (20%, 30%, 40%). The influence of these parameters on the beams’ load carrying capacity, midspan displacement, ductility index, and failure mode were determined. The results showed that at larger prestressing level, the beam had higher cracking, yielding, and ultimate load capacities. However, the displacement was decreased and consequently, the ductility index reduced as pre-stressing level increased. Furthermore, the Fe-SMA material was able to provide significant ductility. The optimum prestressing level can be identified based on the primary RC beams’ design criteria to either improve load or displacement capacity or both.
Azadeh Parvin (Committee Chair)
Mohammad Elahinia (Committee Member)
Liangbo Hu (Committee Member)
119 p.
Civil Engineering; Engineering
Iron-Based Shape Memory Alloy, Shape Memory Alloy, Prestressing, CFRP, Hybrid, GFRP, Coupled CFRP-Fe-SMA

Recommended Citations

Citations

  • Raad, J. (2018). Prestressing RC Beams with Near Surface Mounting (NSM) Fiber Reinforced Polymers (FRP) and/or Iron-Based Shape Memory Alloy (Fe-SMA) Rods [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1544176799414432

    APA Style (7th edition)

  • Raad, Janet. Prestressing RC Beams with Near Surface Mounting (NSM) Fiber Reinforced Polymers (FRP) and/or Iron-Based Shape Memory Alloy (Fe-SMA) Rods. 2018. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1544176799414432.

    MLA Style (8th edition)

  • Raad, Janet. "Prestressing RC Beams with Near Surface Mounting (NSM) Fiber Reinforced Polymers (FRP) and/or Iron-Based Shape Memory Alloy (Fe-SMA) Rods." Master's thesis, University of Toledo, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1544176799414432

    Chicago Manual of Style (17th edition)

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This open access ETD is published by University of Toledo and OhioLINK.