Pressure-Induced Geopolymerization in Alkali-Activated Fly Ash
Abstract
:1. Introduction
2. Experimental Procedure
2.1. Materials
2.2. Sample Preparation
2.3. Experimental Methods
- -
- 29Si MAS NMR spectra: data acquisition at a transmitter frequency of 119.14 MHz, a pulse length of 30° (2.2 µs), a spinning rate of 10 kHz, and a relaxation delay of 22 s, using a 5 mm HX-CPMAS probe and a 5 mm zirconia rotor. The chemical shifts were referenced to TMS (0 ppm).
- -
- 27Al MAS NMR spectra: data acquisition at a transmitter frequency of 156.32 MHz, a pulse length of 30° (1.8 µs), a spinning rate of 22 kHz, and a relaxation delay of 2 s, using a 2.5 mm HX-CPMAS probe and a 2.5 mm low Al zirconia rotor. The chemical shifts were referenced to aqueous AlCl3 (0 ppm).
3. Results
3.1. NaOH-Activated Samples
3.2. Sodium Silicate-Series Samples
4. Discussion
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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(wt%) | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | P2O5 | TiO2 | K2O | SO3 | LOI |
---|---|---|---|---|---|---|---|---|---|---|
57.0 | 21.0 | 10.0 | 4.8 | 1.3 | 1.5 | 1.5 | 1.4 | 1.0 | 2.7 |
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Park, S.M.; Khalid, H.R.; Seo, J.H.; Yoon, H.N.; Son, H.M.; Kim, S.H.; Lee, N.K.; Lee, H.K.; Jang, J.G. Pressure-Induced Geopolymerization in Alkali-Activated Fly Ash. Sustainability 2018, 10, 3538. https://doi.org/10.3390/su10103538
Park SM, Khalid HR, Seo JH, Yoon HN, Son HM, Kim SH, Lee NK, Lee HK, Jang JG. Pressure-Induced Geopolymerization in Alkali-Activated Fly Ash. Sustainability. 2018; 10(10):3538. https://doi.org/10.3390/su10103538
Chicago/Turabian StylePark, Sol Moi, Hammad Raza Khalid, Joon Ho Seo, Hyun No Yoon, Hyeong Min Son, Seon Hyeok Kim, Nam Kon Lee, Haeng Ki Lee, and Jeong Gook Jang. 2018. "Pressure-Induced Geopolymerization in Alkali-Activated Fly Ash" Sustainability 10, no. 10: 3538. https://doi.org/10.3390/su10103538