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Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
Published on: June 27, 2018
Enhancing flexural behavior and ductility of fixed-end RC beams using high-performance fiber-reinforced cementitious
Mohammad Kazem Sharbatdar1, Amir Ghods2, Khaled Sennah3
1Faculty of Civil Engineering, Semnan University, Semnan, Iran. msharbatdar@semnan.ac.ir.
Abstract:
This paper investigates the effect of High-Performance Fiber-Reinforced Cementitious Composite (HPFRCC) with steel fibers on two fixed-end beams. Eight beams with identical sections were tested: two reference specimens and six reinforced with 1% or 2% steel fibers, with varied stirrup spacing near the beam ends. Results showed that fiber addition and stirrup adjustments markedly improved ductility and energy absorption. With 1% fibers, ductility nearly doubled, while 2% fibers more than doubled load capacity and tripled energy ductility. Adjusting loading points further enhanced strength and ductility. Overall, HPFRCC beams absorbed about 12% more energy than conventional concrete and extended the plastic hinge zone by nearly 50%.
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