Papers by Mostafa Fakharifar
Composite Structures, 2016
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Journal of Bridge Engineering, 2016
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Transportation Research Record: Journal of the Transportation Research Board, 2015
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International Journal of Concrete Structures and Materials, 2015
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In this study, Confined Concrete Filled Tube (CCFT) is introduced and studied for the seismic des... more In this study, Confined Concrete Filled Tube (CCFT) is introduced and studied for the seismic design of reinforced concrete columns, exhibiting improved results in terms of stiffness, strength and ductility. Specifically, plastic tubes were used as the confining tube in CFT system instead of steel, since it is more economical, lighter (approximately one-half the weight of aluminum and one-sixth the weight of steel), self-extinguishing when exposed to fire and immunity to galvanic or electrolytic attack. As such, plastic tube makes itself an excellent candidate for seismic design consideration. A detailed study on the effects of the polymeric plastic tubes implemented in both CFT and CCFT systems was conducted. The excellent confining capabilities of the confined tubes were demonstrated by the enhanced ductility. Additionally, extra confinement to CFT tubes was provided by an external Fiber Reinforced Polymer (FRP) layer. Testes were carried out to better understand composite action ...
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Composites Part B: Engineering, 2015
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Construction and Building Materials, 2014
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Advanced Materials Research, 2013
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Earthquake Engineering and Engineering Vibration, 2014
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Frontiers of Structural and Civil Engineering, 2015
ABSTRACT The use of FRP reinforcement is becoming increasingly attractive in construction of new ... more ABSTRACT The use of FRP reinforcement is becoming increasingly attractive in construction of new structures. However, the inherent linear elastic behavior of FRP materials up to rupture is considered as a major drawback under seismic attacks when significant material inelasticity is required to dissipate the input energy through hysteretic cycles. Besides, cost considerations, including FRP material and construction of pre-fabricated FRP configurations, especially for stirrups, and probable damage to epoxy coated fibers when transported to the field are noticeable issues. The current research has proposed a novel economical hybrid reinforcement scheme for the next generation of infrastructures implementing on-site fabricated FRP stirrups comprised of FRP sheets. The hybrid reinforcement consists of conventional longitudinal steel reinforcement and FRP stirrups. The key feature of the proposed hybrid reinforcement is the enhanced strength and ductility owing to the considerable confining pressure provided by the FRP stirrups to the longitudinal steel reinforcement and core concrete. Reinforced concrete beam specimens and beam-column joint specimens were tested implementing the proposed hybrid reinforcement. The proposed hybrid reinforcement, when compared with conventional steel stirrups, is found to have higher strength, stiffness, and energy dissipation. Design methods, structural behavior, and applicability of the proposed hybrid reinforcement are discussed in detail in this paper.
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Papers by Mostafa Fakharifar