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http://dx.doi.org/10.4191/kcers.2012.49.6.575

Compressive Strength of Geopolymers while Varying the Raw Materials  

Joo, Gi-Tae (Department of Materials Science & Engineering, Seoul National University of Science & Technology)
Lee, Tae-Kun (Department of Materials Science & Engineering, Seoul National University of Science & Technology)
Park, Mihye (Department of Materials Science & Engineering, Seoul National University of Science & Technology)
Hwang, Yeon (Department of Materials Science & Engineering, Seoul National University of Science & Technology)
Publication Information
Journal of the Korean Ceramic Society / v.49, no.6, 2012 , pp. 575-580 More about this Journal
Abstract
Geopolymers were synthesized using raw materials produced from two different areas: one was from Indonesia and the other was from Habcheon, Korea. The constituting phases of the Indonesian raw material were quartz and kaolinite, while those of the Habcheon sample were quartz, halloysite and albite. They were both calcined at $750^{\circ}C$ for 6 hours, and solution of NaOH and water glass was added to activate the geopolymeric reaction. The compressive strength of geopolymer synthesized from the Indonesian raw material showed a low value of $151\;kgf/cm^2$ after curing for 28 days. However, it could be greatly increased by adding blast furnace slag powders of $1188\;kgf/cm^2$ and $1969\;kgf/cm^2$ at 20 wt% and 40 wt% additions, respectively. The compressive strength of the geopolymer synthesized from the Habcheon raw material was high, at $557\;kgf/cm^2$, after 28 days, and the very high early-stage (3 days) strength of $556\;kgf/cm^2$ for this sample was remarkable. Commercially available Habcheon metastate raw material, of which composition showed low CaO and $Na_2O$ contents compared to the calcined Habcheon raw material, was also examined. It was found that the compressive strength of the commercial metastate type was nearly identical to that of the calcined Habcheon raw material except for the relatively low value at an early curing stage and at a high curing temperature of $60^{\circ}C$.
Keywords
Geopolymer; Compressive strength; Alkali activation;
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Times Cited By KSCI : 2  (Citation Analysis)
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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).   DOI   ScienceOn
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 J. Davidovits, "Properties of Geopolymer Cement," pp. 131- 49 in Proc. 1st Int. Conf. on Alkaline Cement and Concrete, Scientific Research Institute on Binders and Materials, Kiev Technical State University, Kiev, Ukraine, 1994.
4 S. G. Son, S. Y. Hong, and Y. D. Kim, "Preparation and its Characteristics of Fly Ash-based Geopolymeric Mortar using Low Grade Silica Waste," J. Kor. Ceram. Soc., 45 [7] 395-400 (2008).   과학기술학회마을   DOI   ScienceOn
5 J. T. Kim, D. S. Seo, G. J. Kim, and J. K. Lee, "Influence of Alkaline-activator Content on the Compressive Strength of Aluminosilicate-based Geopolymer," J. Kor. Ceram. Soc., 47 [3] 216-22 (2010).   과학기술학회마을   DOI
6 J. Davidovits, "GEOPOLYMERS: Inorganic Polymeric New Materials," J. Therm. Anal., 37 1633-56 (1991).   DOI
7 J. Davidovits, "GEOPOLYMERS: Man-Made Rock Geosynthesis and the Resulting Development of Very Early High Strength Cement," J. Mater. Educ., 16 [2,3] 91-138 (1994).
8 J. Davidovits, "Geopolymer Chemistry and Applications," pp. 149-96, Institute Geopolymer, Saint-Quentin, 2008.
9 P. J. Schilling, L. G. Butler, A. Roy, and H. C. Eaton, "$^{29}Si$ and $^{27}Al$ MAS-NMR of NaOH-Activated Blast-Furnace Slag," J. Am. Ceram. Soc., 77 2363-68 (1994).   DOI
10 A. Buchwald, K. Dombrowski, and M. Weil, "The Influence of Calcium Content on the Performance of Geopolymeric Binder Especially the Resistance Against Acids," pp. 185-8, in Geopolymer, Green Chemistry and Sustainable Development Solutions, Ed. by J. Davidovits, Institute Geopolymer, Saint-Quentin, 2005.