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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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Mechanical Investigation on Fiber-Doped Cementitious Materials
Yongcheng Ji1, Yunfei Zou1, Xucheng Wan1
1School of Civil Engineering, Northeast Forestry University, Harbin 150040, China.
Polymers
|May 14, 2022
Summary
Carbon fiber offers superior reinforcement for cementitious materials, enhancing mechanical properties like strength and reducing shrinkage compared to glass and PVA fibers. This study investigates various fiber types and their impact on cement-based material performance.
Area of Science:
- Materials Science
- Civil Engineering
- Composite Materials
Background:
- Cementitious materials are crucial in construction.
- Fiber reinforcement enhances mechanical properties of cement-based materials.
- Comparative studies on different fiber types are needed.
Purpose of the Study:
- To investigate the influence of carbon, glass, and polyvinyl alcohol (PVA) fibers on cement-based material properties.
- To analyze the relationship between fiber type, volume fraction, and mechanical performance.
- To develop predictive models for fiber-reinforced cementitious composites.
Main Methods:
- Experimental testing of compressive strength, bending strength, and drying shrinkage.
- Theoretical analysis combining experimental data and mathematical modeling.
- Finite element analysis using ABAQUS software for mechanical performance prediction.
Main Results:
- Carbon fiber exhibited the fastest increase in bending and compressive strength, followed by glass and PVA fibers.
- Bending strength increased with fiber volume fraction, while compressive strength showed an initial increase then decrease.
- Carbon fiber demonstrated less shrinkage compared to glass and PVA fibers, significantly impacting early strength development.
Conclusions:
- Carbon fiber provides the best reinforcement effect for cement-based materials.
- Fiber type, volume fraction, and spacing significantly influence material strength.
- Mathematical and finite element models accurately predict the mechanical performance of fiber-reinforced cement composites.
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