-Cured Fiber-Reinforced Board from Low-Calcium Clinker: Key Synthesizing Factors, Carbonation Products, and Comparison to Autoclaved Calcium Silicate Board
Publication: Journal of Materials in Civil Engineering
Volume 36, Issue 7
Abstract
-cured fiber-reinforced boards (CFBs) were fabricated from low-calcium clinkers (CaO content from 48.0% to 53.5%) by curing. Key synthesizing factors, including clinker composition, compaction pressure, water content, carbonation duration, carbonation temperature, and partial pressure of , were investigated. Further, a performance comparison between CFB and autoclaved calcium silicate board (ACSB) was made. The results showed that the CFB with water-saturated flexural strength of 17.8 MPa, sequestration content of 18%, water adsorption of 9.2%, and bulk density of 2,059 was successfully prepared. CFBs, prepared at the compaction strength of 10 MPa, water content of 16%–18%, carbonation temperature of 50°C, and partial pressure of 0.3 MPa, were preferred to reach superior performance. CFB showed slightly higher water-saturation flexural strength, 59.3% lower water adsorption, and 22.5% lower calcium carbonates induced emission in comparison with ACSB. Owing to the higher increase in solid weight and volume during carbonation, CFB is much denser than autoclaved ACSB. Rhombohedral crystals of calcite could be observed in CFB, rather than the crystals of vaterite (cauliflower-like) and aragonite (needle-like), although diffraction signals of the latter two were detected.
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Data Availability Statement
All data, models, and code that support the findings of this study are available upon reasonable request.
Acknowledgments
Financial support from Huaxin Cement Co., Ltd., and postdoctoral innovation practice posts in Hubei Province and are gratefully acknowledged.
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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: Apr 10, 2023
Accepted: Dec 13, 2023
Published online: Apr 23, 2024
Published in print: Jul 1, 2024
Discussion open until: Sep 23, 2024
ASCE Technical Topics:
- [Inorganic compounds]
- Carbon compounds
- Carbon dioxide
- Carbonation
- Chemical processes
- Chemicals
- Chemistry
- Comparative studies
- Composite materials
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Environmental engineering
- Fiber reinforced composites
- Flexural strength
- Hydrologic engineering
- Hydrologic properties
- Hydrology
- Material mechanics
- Material properties
- Materials engineering
- Methodology (by type)
- Organic compounds
- Pressure (type)
- Research methods (by type)
- Solid mechanics
- Strength of materials
- Water and water resources
- Water content
- Water pressure
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