Corrosion Resistance and Bond Strength of Silica Particle Modified Enamel Coated Smooth and Deformed Steel Bars
Publication: Journal of Materials in Civil Engineering
Volume 36, Issue 7
Abstract
Both the corrosion resistance and bond strength of silica particle-modified enamel (SPME)-coated steel bars are experimentally investigated, and uncoated and pure enamel (PE)-coated bars are also prepared for comparison. The microstructure of SPME coating is analyzed by using scanning electron microscopy (SEM), and the corrosion performance in simulated concrete pore solutions is assessed by using a series of electrochemical techniques. Pull-out tests were conducted to obtain the bond behavior with concrete. SEM images show that silica particles are completely embedded in the enamel matrix. The corrosion resistance of SPME-coated smooth and deformed steel bars is 68 and 28 times lower, respectively, than that of the uncoated bars. The bond strength, bond stiffness, bond ductility, and bond toughness of SPME-coated smooth steel bars are 4.33, 4.61, 35.86, and 20.66 times greater than those of the uncoated bars, while they are 1.29, 4.72, 2.21, and 1.24 times greater than those of the uncoated ones for the deformed steel bars. SPME-coated steel bars can be used to enhance the seismic performance of reinforced concrete structures in earthquake-prone zones, while also improving corrosion resistance.
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Data Availability Statement
Some or all data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study was supported by the National Natural Science Foundation of China (No. 52078099 and 52225804).
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 36 • Issue 7 • July 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Jul 10, 2023
Accepted: Jan 3, 2024
Published online: Apr 26, 2024
Published in print: Jul 1, 2024
Discussion open until: Sep 26, 2024
ASCE Technical Topics:
- [Inorganic compounds]
- Bars (structure)
- Bonding
- Chemicals
- Chemistry
- Corrosion
- Design (by type)
- Deterioration
- Engineering fundamentals
- Engineering materials (by type)
- Environmental engineering
- Load and resistance factor design
- Load factors
- Material mechanics
- Material properties
- Materials characterization
- Materials engineering
- Materials processing
- Organic compounds
- Particles
- Silica
- Strength of materials
- Structural design
- Structural engineering
- Structural members
- Structural systems
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