Damage and Recovery Behavior of Low-Replacement-Rate Fly Ash Concrete after Different High-Temperature Exposures
Abstract
:1. Introduction
2. Materials and Methods
2.1. Raw Materials and Mix Design
2.2. High-Temperature Exposure and Recuring
2.3. Test and Sampling Methods
3. Results and Discussion
3.1. Raw Materials
3.2. Flexural and Compressive Tests
3.3. Microstructural and Chemical Composition Studies
3.3.1. XRD Studies
3.3.2. Thermogravimetric Analysis
3.3.3. SEM Observation and the EDS Test
3.3.4. Nitrogen Adsorption Tests
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Group Name a | Cement | Fly Ash | Water | Fine Aggregate |
---|---|---|---|---|
X00 | 100 | 0 | 50 | 300 |
X10 | 90 | 10 | 50 | 300 |
Type | SiO2 | Al2O3 | K2O | CaO | Fe2O3 | SO3 | MgO | Others |
---|---|---|---|---|---|---|---|---|
Cement | 15.08 | 3.73 | 0.92 | 70.45 | 3.10 | 4.06 | 1.80 | 0.86 |
Fly ash | 66.48 | 14.92 | 3.32 | 5.41 | 9.86 | - | - | - |
Element | O | C | Ca | Si |
---|---|---|---|---|
Atom percentage (%) | 44.11 | 20.88 | 19.43 | 5.17 |
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Mi, L.; Kuang, B.; Fu, D.; Li, L.; Liu, Y.; Wang, C.; He, C.; Chen, Y.; Zhang, H.; Liu, F.; et al. Damage and Recovery Behavior of Low-Replacement-Rate Fly Ash Concrete after Different High-Temperature Exposures. Materials 2024, 17, 4330. https://doi.org/10.3390/ma17174330
Mi L, Kuang B, Fu D, Li L, Liu Y, Wang C, He C, Chen Y, Zhang H, Liu F, et al. Damage and Recovery Behavior of Low-Replacement-Rate Fly Ash Concrete after Different High-Temperature Exposures. Materials. 2024; 17(17):4330. https://doi.org/10.3390/ma17174330
Chicago/Turabian StyleMi, Lin, Bowen Kuang, Daixin Fu, Lang Li, Yongjie Liu, Chong Wang, Chao He, Yao Chen, Hong Zhang, Fulin Liu, and et al. 2024. "Damage and Recovery Behavior of Low-Replacement-Rate Fly Ash Concrete after Different High-Temperature Exposures" Materials 17, no. 17: 4330. https://doi.org/10.3390/ma17174330