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Updated: Jan 13, 2026
11:07
Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
Published on: June 27, 2018
11.6K
Experimental Study on Flexural Performance of SFCB-Reinforced ECC-Concrete Composite Beams
Yu Ling1, Shuo Xu1, Chaohao Bi1
1Guangzhou Power Supply Bureau, Guangdong Power Grid Co., Ltd., China Southern Power Grid Co., Ltd., Guangzhou 510665, China.
Polymers
|October 28, 2025
Summary
Engineered Cementitious Composite (ECC) and Steel-Glass Fiber Reinforced Polymer (GFRP) Composite Bars (SFCBs) enhance concrete beam performance. ECC improves crack control, while SFCBs offer ductility and corrosion resistance, optimizing structural capacity and ductility.
Area of Science:
- Civil Engineering
- Materials Science
- Structural Engineering
Background:
- Engineered Cementitious Composite (ECC) offers superior tensile strain-hardening and crack control via multiple cracking.
- Steel-Glass Fiber Reinforced Polymer (GFRP) Composite Bars (SFCBs) combine steel's ductility with GFRP's corrosion resistance.
Purpose of the Study:
- To investigate synergistic mechanisms for optimizing concrete structure performance using SFCB-reinforced ECC-concrete composite beams.
- To examine the influence of ECC replacement height and steel ratio on flexural performance.
Main Methods:
- Designed eight SFCB-reinforced ECC-concrete composite beams.
- Conducted four-point bending tests.
- Varied ECC replacement height (hE/h) and steel ratio (As/Ab).
Main Results:
- Increased ECC replacement enhanced ultimate bending capacity and ductility (e.g., 50% ECC increased strength by 4.79% and ductility by 8.09%).
- Steel ratio governed yield behavior and crack development, improving stiffness, yield moments, ductility, and pre-yield crack control.
- Identified synergistic mechanisms: ECC for crack control via multiple cracking, SFCB steel ratio for ductile response regulation.
Conclusions:
- ECC and SFCBs synergistically enhance concrete beam flexural performance.
- ECC replacement optimizes crack control, while steel ratio within SFCBs regulates ductility.
- Findings provide theoretical guidance for improving building structure capacity and ductility.
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