Effects of Aluminum Sulfate and Quicklime/Fluorgypsum Ratio on the Properties of Calcium Sulfoaluminate (CSA) Cement-Based Double Liquid Grouting Materials
Abstract
:1. Introduction
→ 3CaO∙Al2O3∙3CaSO4∙32H2O + 2(Al2O3∙3H2O)
2. Materials and Methods
2.1. Materials
2.2. Test Methods
3. Results
3.1. Setting Time
3.2. Compressive Strength
3.3. Hydration Heat
3.4. XRD Results
3.5. DTA-TG Results
3.6. SEM Results
4. Discussion
4.1. Optimum Ratio of Quicklime/Fluorgypsum
→ 3(3CaO∙Al2O3∙3CaSO4∙32 H2O)
4.2. Optimum Content of Aluminum Sulfate
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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SO3 | SiO2 | CaO | Al2O3 | Fe2O3 | MgO | LOI |
---|---|---|---|---|---|---|
9.44 | 8.59 | 45.21 | 31.68 | 3.86 | 0.82 | 0.4 |
Ca4Al6SO16 | 2CaO∙SiO2 | C4AF | f-SO3 | f-CaO |
---|---|---|---|---|
64.12 | 25.53 | 6.41 | 1.92 | 2.02 |
SO3 | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | CaF2 | LOI |
---|---|---|---|---|---|---|---|
53.79 | 4.71 | 2.6 | 0.24 | 34.56 | 1.15 | 0.96 | 1.99 |
Mix No. | Slurry A 1 | Slurry B 2 | ||||
---|---|---|---|---|---|---|
CSA 3 (wt.%) | Water (wt.%) | Fluorgypsum (wt.%) | Quicklime (wt.%) | Aluminum Sulfate (wt.%) | Water (wt.%) | |
AS0 | 100 | 100 | 80 | 20 | 0 | 100 |
AS1 | 100 | 100 | 80 | 20 | 1 | 100 |
AS2 | 100 | 100 | 80 | 20 | 2 | 100 |
AS3 | 100 | 100 | 80 | 20 | 3 | 100 |
AS4 | 100 | 100 | 80 | 20 | 4 | 100 |
QL0 | 100 | 100 | 100 | 0 | 2 | 100 |
QL10 | 100 | 100 | 90 | 10 | 2 | 100 |
QL20 | 100 | 100 | 80 | 20 | 2 | 100 |
QL30 | 100 | 100 | 70 | 30 | 2 | 100 |
QL40 | 100 | 100 | 60 | 40 | 2 | 100 |
Slurry A | Initial Setting Time (min) | Final Setting Time (min) | ||
---|---|---|---|---|
Aluminum Sulfate (wt.%) | CSA (wt.%) | Water (wt.%) | ||
0 | 100 | 100 | 491 | 619 |
1 | 100 | 100 | 489 | 614 |
2 | 100 | 100 | 485 | 607 |
3 | 100 | 100 | 486 | 611 |
4 | 100 | 100 | 479 | 599 |
Mix No. | 1 Day Weight Loss (%) | 28 Days Weight Loss (%) | ||||
---|---|---|---|---|---|---|
AFt | AFm | Al(OH)3 | AFt | AFm | Al(OH)3 | |
AS0 | 14.45 | 1.82 | 1.76 | 28.88 | (3.60) | 2.61 |
AS1 | 18.75 | (2.37) * | 3.58 | 26.86 | (3.11) | 2.15 |
AS2 | 18.99 | (2.34) | 3.00 | 23.70 | (2.54) | 2.75 |
AS3 | 19.93 | (2.85) | 3.66 | 23.67 | (2.66) | 3.16 |
AS4 | 20.22 | (2.46) | 3.56 | 25.65 | (3.17) | 2.47 |
Mix No. | 1d Weight Loss (%) | 28d Weight Loss (%) | ||||
---|---|---|---|---|---|---|
AFt | AFm | Al(OH)3 | AFt | AFm | Al(OH)3 | |
QL0 | 14.24 | (1.59) * | 3.49 | 20.10 | (1.90) | 3.54 |
QL10 | 17.35 | (2.11) | 4.19 | 24.38 | (2.56) | 3.52 |
QL20 | 18.99 | (2.34) | 3.00 | 23.70 | (2.54) | 2.75 |
QL30 | 16.45 | 2.02 | 3.16 | 26.11 | (3.33) | (2.49) |
QL40 | 15.61 | 2.34 | 2.33 | 22.19 | 4.32 | (2.77) |
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Wang, Y.; Yu, J.; Wang, J.; Guan, X. Effects of Aluminum Sulfate and Quicklime/Fluorgypsum Ratio on the Properties of Calcium Sulfoaluminate (CSA) Cement-Based Double Liquid Grouting Materials. Materials 2019, 12, 1222. https://doi.org/10.3390/ma12081222
Wang Y, Yu J, Wang J, Guan X. Effects of Aluminum Sulfate and Quicklime/Fluorgypsum Ratio on the Properties of Calcium Sulfoaluminate (CSA) Cement-Based Double Liquid Grouting Materials. Materials. 2019; 12(8):1222. https://doi.org/10.3390/ma12081222
Chicago/Turabian StyleWang, Yuli, Jie Yu, Junjie Wang, and Xuemao Guan. 2019. "Effects of Aluminum Sulfate and Quicklime/Fluorgypsum Ratio on the Properties of Calcium Sulfoaluminate (CSA) Cement-Based Double Liquid Grouting Materials" Materials 12, no. 8: 1222. https://doi.org/10.3390/ma12081222