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Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
Published on: June 27, 2018
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Experimental Study on the Performance of Steel-Fiber-Reinforced Concrete for Remote-Pumping Construction
Minglei Zhao1, Changyong Li2, Jie Li1
1School of Engineering, RMIT University, Melbourne 3001, Australia.
Materials (Basel, Switzerland)
|May 27, 2023
Summary
This study optimized steel-fiber-reinforced concrete (SFRC) for remote pumping in infrastructure. Results show increased steel fiber content enhances mechanical properties and pumpability for advanced construction.
Area of Science:
- Civil Engineering
- Materials Science
- Construction Technology
Background:
- Mechanized and intelligent construction drives innovation in concrete technology.
- Steel-fiber-reinforced concrete (SFRC) is evolving for improved pumpability and sustainability.
- Remote pumping is crucial for modern infrastructure projects.
Purpose of the Study:
- To investigate the mixing proportion design for remote-pumped SFRC.
- To evaluate the pumpability and mechanical properties of SFRC for remote applications.
- To optimize SFRC for high pumpability and enhanced performance.
Main Methods:
- Absolute volume method and steel-fiber-aggregate skeleton packing tests were employed.
- Water dosage and sand ratio were adjusted for varying steel fiber volumes (0.4%–1.2%).
- Lab pumping tests assessed slump flowability, pressure bleeding, and static segregation.
Main Results:
- Slump flowability was verified as suitable for remote pumping.
- Increased steel fiber content enhanced compressive and splitting tensile strength.
- Flexural strength showed a higher improvement than specified due to fiber orientation.
- SFRC exhibited excellent impact resistance and acceptable water impermeability.
Conclusions:
- Optimized SFRC mixtures demonstrate excellent pumpability for remote applications.
- Steel fiber reinforcement significantly improves the mechanical properties of concrete.
- SFRC is a viable material for advanced, sustainable infrastructure construction.
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