Influence of Activator Na2O Concentration on Residual Strengths of Alkali-Activated Slag Mortar upon Exposure to Elevated Temperatures
Abstract
:1. Introduction
2. Materials and Methods
2.1. Material Characterization
2.2. Mixture Proportion
2.3. Method
3. Results and Discussion
3.1. Compressive Strength
3.2. Flexural Strength
3.3. Tensile Strength
3.4. Thermogravimetric Analysis
3.5. XRD Analysis
3.6. Microstructural Analysis
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Oxide | SiO2 | CaO | Al2O3 | Fe2O3 | MgO | SO3 | Na2O | K2O | LOI |
---|---|---|---|---|---|---|---|---|---|
(%) | 33.81 | 41.24 | 15.19 | 0.41 | 5.54 | 2.51 | 0.25 | 0.61 | 0.18 |
Mixture | Compressive Strength CS (MPa) | Flexural Strength FS (MPa) | Tensile Strength TS (MPa) | FS/CS | ϕ (Radian) |
---|---|---|---|---|---|
A4 | 35.8 | 6.8 | 1.54 | 0.18994 | 0.67868 |
A6 | 57.7 | 8.9 | 2.2 | 0.15425 | 0.68526 |
A8 | 66 | 9.3 | 1.64 | 0.14091 | 0.70527 |
A10 | 68.9 | 8.7 | 1.67 | 0.12627 | 0.70629 |
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Tran, T.T.; Kwon, H.-M. Influence of Activator Na2O Concentration on Residual Strengths of Alkali-Activated Slag Mortar upon Exposure to Elevated Temperatures. Materials 2018, 11, 1296. https://doi.org/10.3390/ma11081296
Tran TT, Kwon H-M. Influence of Activator Na2O Concentration on Residual Strengths of Alkali-Activated Slag Mortar upon Exposure to Elevated Temperatures. Materials. 2018; 11(8):1296. https://doi.org/10.3390/ma11081296
Chicago/Turabian StyleTran, Tai Thanh, and Hyug-Moon Kwon. 2018. "Influence of Activator Na2O Concentration on Residual Strengths of Alkali-Activated Slag Mortar upon Exposure to Elevated Temperatures" Materials 11, no. 8: 1296. https://doi.org/10.3390/ma11081296