Compressive Strength and Microstructure of Carbide Slag and Alkali-Activated Blast Furnace Slag Pastes in China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Mixture Proportions
2.3. Experimental Method (Sample Preparation) (Figure 3)
- (1)
- Water-to-Solid Ratio Test
- (2)
- Determination of Setting Time
- (3)
- Compressive Strength
2.4. Materials Characterization
2.5. Experimental Techniques
3. Results and Discussion
3.1. Properties
3.1.1. Effect of Carbide Slag to Blast Furnace Slag Ratio on Properties of CAB Pastes
3.1.2. Effect of NaOH on Properties of CAB Pastes
3.1.3. Effect of Curing Conditions on Properties of CAB Pastes
3.2. Reaction Products
3.2.1. XRD Findings
3.2.2. DSC/TG Analysis
3.2.3. FTIR Analysis
3.3. Microstructure Development
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Carbide Slag | Na2O | MgO | Al2O3 | SiO2 | P2O5 | SO3 | Cl | K2O | CaO | TiO2 | V2O5 | Fe2O3 | SrO |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chemical Composition | 0.74 | 0.34 | 2.21 | 4.23 | 0.08 | 0.78 | 0.93 | 0.01 | 90.29 | 0.05 | 0.02 | 0.24 | 0.08 |
Blast Furnace Slag | Na2O | MgO | Al2O3 | SiO2 | SO3 | Cl | K2O | CaO | TiO2 | MnO | Fe2O3 | SrO | Y2O3 | ZrO2 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chemical Composition | 0.48 | 9.01 | 15.62 | 27.24 | 2.73 | 0.07 | 0.42 | 42.21 | 1.22 | 0.47 | 0.40 | 0.07 | 0.01 | 0.06 |
Mix | Blast Furnace Slag | Carbide Slag | Sodium Hydroxide | Curing Conditions |
---|---|---|---|---|
M1 | 100% | 0% | 3% | Standard curing |
M2 | 95% | 5% | 3% | Standard curing |
M3 | 90% | 10% | 3% | Standard curing |
M4 | 85% | 15% | 3% | Standard curing |
M5 | 80% | 20% | 3% | Standard curing |
M6 | 70% | 30% | 3% | Standard curing |
Mix | Blast Furnace Slag | Carbide Slag | Sodium Hydroxide | Curing Conditions |
---|---|---|---|---|
M7 | 80% | 20% | 1% | Standard curing |
M8 | 80% | 20% | 2% | Standard curing |
M9 | 80% | 20% | 3% | Standard curing |
M10 | 80% | 20% | 4% | Standard curing |
M11 | 80% | 20% | 5% | Standard curing |
M12 | 80% | 20% | 6% | Standard curing |
M13 | 80% | 20% | 8% | Standard curing |
M14 | 80% | 20% | 10% | Standard curing |
Mix | Blast Furnace Slag | Carbide Slag | Sodium Hydroxide | Curing Conditions |
---|---|---|---|---|
M15 | 90% | 10% | 3% | Standard curing |
M16 | 90% | 10% | 3% | Water curing |
M17 | 90% | 10% | 3% | Steam curing |
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Li, Z.; Xu, K.; Sun, N.; Wang, J.; Xue, K.; Xu, L.; Ren, Y.; Yan, Z.; Sima, T. Compressive Strength and Microstructure of Carbide Slag and Alkali-Activated Blast Furnace Slag Pastes in China. Buildings 2024, 14, 1681. https://doi.org/10.3390/buildings14061681
Li Z, Xu K, Sun N, Wang J, Xue K, Xu L, Ren Y, Yan Z, Sima T. Compressive Strength and Microstructure of Carbide Slag and Alkali-Activated Blast Furnace Slag Pastes in China. Buildings. 2024; 14(6):1681. https://doi.org/10.3390/buildings14061681
Chicago/Turabian StyleLi, Zhixin, Kaidong Xu, Nan Sun, Jina Wang, Kaiwang Xue, Longyun Xu, Yi Ren, Zhenzhou Yan, and Tongbao Sima. 2024. "Compressive Strength and Microstructure of Carbide Slag and Alkali-Activated Blast Furnace Slag Pastes in China" Buildings 14, no. 6: 1681. https://doi.org/10.3390/buildings14061681