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Influence of Alkaline-activator Content on the Compressive Strength of Aluminosilicate-based Geopolymer

알루미노 실리케이트계 지오폴리머의 압축강도에 미치는 알카리 활성화제의 영향

  • Received : 2009.11.17
  • Accepted : 2010.04.20
  • Published : 2010.05.31

Abstract

Portland cement has been restricted in applications to ecological area because of its environmental harmfulness and the $CO_2$ emission during a production process. Geopolymer materials attract some attention as an inorganic binder due to their superior mechanical and eco-friendly properties. In this study, geopolymer-based cement was prepared by using aluminosilicate minerals (flyash, meta-kaolin) with alkaline-activators and its compressive strength with concentration of alkaline-activators was investigated. Aluminosilicate-based geopolymers were obtained by mixing aluminosilicate minerals, alkaline solution (NaOH or KOH with different concentration) and water-glass under the vigorous stirring for 20 min. Compressive strength after curing at $30^{\circ}C$ for 3 days increased with the concentration of alkaline-activator due to the enhanced polymerization of the aluminosilicate materials and dense microstructure. Aluminosilicate-based geopolymer cement using KOH as an alkaline-activator showed high compressive strength compared with NaOH activator. In addition, geopolymer cement using fly-ash as a raw material showed higher compressive strength than that of meta-kaolin.

Keywords

Geopolymer cement;Aluminasilicate;Fly-ash;Meta-kaolin;Alkaline-activator

References

  1. P. Duxson, J. L. Provis, G. C. Lukey, and J. S. J. Van Deventer, “The Role of Inorganic Polymer Technology in the Development of Green Concrete,” Cem. Concr. Res., 37 [12] 1590-97 (2007). https://doi.org/10.1016/j.cemconres.2007.08.018
  2. J. Temuujin and A. van Riessen, “Effect of Fly Ash Preliminary Calcinations on the Properties of Geopolymer,” J. Hazard. Mater., 164 [2-3] 634-39 (2008).
  3. Q. Zhao, B. Nair, T. Rahimian, and P. Balaguru, “Novel Geopolymer Based Composites with Enhanced Ductility,” J. Mater. Sci., 42 [9] 3131-37 (2007). https://doi.org/10.1007/s10853-006-0527-4
  4. K. Komnitas and D. Zaharaki, “Geopolymerrisation; A review and Prospects for the Minerals Industry,” Miner. Eng., 20 [14] 1261-77 (2007). https://doi.org/10.1016/j.mineng.2007.07.011
  5. L. Provis, C. Z. Yong, P. Duxson, and J. S. J. Van Deventer, “Correlating Mechanical and Thermal Properties of Sodium Silicate-Fly Ash Geopolymer,” J. Mater. Sci., 336 [1-3] 57-63 (2009).
  6. D. Panias, I. P. Giannopoulou, and T. Perraki, “Effect of Synthesis Parameters on the Mechanical Properties of Fly Ash-Based Geopolymers,” Colloid Surf. A-Physicochem. Eng. Asp., 301 [1-3] 246-54 (2007). https://doi.org/10.1016/j.colsurfa.2006.12.064
  7. J. L. Bell, P. E. Driemeyer, and W. M Kriven, “Formation of Ceramics from Metakaolin-Based Geopolymers: Part 1-CSBased Geopolymer,” J. Am. Ceram. Soc., 92 [1] 1-8 (2008). https://doi.org/10.1111/j.1551-2916.2008.02790.x
  8. H. C. Wu and P. Sun, “New Building Materials from Fly Ash-Based Lightweight Inorganic Polymer,” Constr. Build. Mater., 21 [1] 211-17 (2007). https://doi.org/10.1016/j.conbuildmat.2005.06.052
  9. H. S. Park, D. W. Yoo, S. H. Byun, and J. T. Song, “Rheological Properties of Ordinary Portland Cement: Blast Furnace Slag Fly Ash Blends Containing Ground Fly Ash,” J. Kor. Ceram. Soc., 46 [1] 58-68 (2009). https://doi.org/10.4191/KCERS.2009.46.1.058
  10. J. G. S. V. Jaarsveld, J. S. J. V. Deventer, and G. C. Lukey, “The Effect of Composition and Temperature on the Properties of Fly Ash and Kaolinite-Based Geopolymers,” Chem. Eng. J., 89 [1-3] 63-73 (2002). https://doi.org/10.1016/S1385-8947(02)00025-6

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