DOI QR코드

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Development of slag based Shirasu geopolymer

  • 투고 : 2016.11.05
  • 심사 : 2017.05.23
  • 발행 : 2017.07.25

초록

Shirasu, a pyroclastic flow deposit, showed considerable performance as aluminosilicate source in geopolymer, based on past research. However, the polymerization reactivity was somewhat lower compared to the traditional fly ash based geopolymer even though the long-term strength was fairly good. The present study concentrates on the development of higher initial strength performance of Shirasu based geopolymer by utilizing ground granulated blast furnace slag as an admixture. Mortars with various mix proportions were adopted to study the effect of parametric changes on strength development along with the addition of slag in different percentages. A combination of sodium hydroxide and sodium silicate was used as alkaline activators considering parameters like molar ratios of alkali to geopolymer water and silica to alkali molar ratio. The mortars were cured at elevated temperatures under different curing conditions to analyze the effect on strength development. Compressive strength test, mercury intrusion porosimetry and X-ray powder diffraction were carried out to assess the strength performance and microstructure of slag-Shirasu based geopolymer. Based on the experimental study, it was observed that the initial and long-term strength development of Slag-Shirasu geopolymer were improved by the addition of slag.

키워드

참고문헌

  1. Bakharev, T. (2005), "Geopolymeric materials prepared using class F fly ash and elevated temperature curing", Cement Concrete Res., 35(6), 1224-1232. https://doi.org/10.1016/j.cemconres.2004.06.031
  2. Bernal, S.A., Provis, J.L., Walkley, B., Nicolas, R.S., Gehman, J.D., Brice, D.G., Kilcullen, A.R., Duxson, P. and Van Deventer, J.S.J. (2013), "Gel nanostructure in alkali-activated binders based on slag and fly ash, and effects of accelerated carbonation", Cement Concrete Res., 53, 127-144. https://doi.org/10.1016/j.cemconres.2013.06.007
  3. Deb, P.S., Nath, P. and Sarker, P.K. (2014), "The effects of ground granulated blast-furnace slag blending with fly ash and activator content on the workability and strength properties of geopolymer concrete cured at ambient temperature", Mater. Des., 62, 32-39. https://doi.org/10.1016/j.matdes.2014.05.001
  4. Djobo, J.N.Y., Tchadjie, L.N., Tchakoute, H.K., Kennea, B.B.D., Elimbi, A. and Njopwouo, D. (2014), "Synthesis of geopolymer composites from a mixture of volcanic scoria and metakaolin", J. Asian Ceram. Soc., 2(4), 387-398. https://doi.org/10.1016/j.jascer.2014.08.003
  5. Duxson, P., Fernandez-Jimenez, A., Provis, J.L., Lukey, G.C., Palomo, A. and Van Deventer, J.S.J. (2007), "Geopolymer technology: The current state of the art", J. Mater. Sci., 42(9), 2917-2933. https://doi.org/10.1007/s10853-006-0637-z
  6. Gao, X., Yu, Q.L. and Brouwers, H.J.H. (2015), "Properties of alkali activated slag-fly ash blends with limestone addition", Cement Concrete Compos., 59, 119-128. https://doi.org/10.1016/j.cemconcomp.2015.01.007
  7. Guo, X., Shi, H. and Dick, W.A. (2010), "Compressive strength and microstructural characteristics of class C fly ash geopolymer", Cement Concrete Compos., 32(2), 142-147. https://doi.org/10.1016/j.cemconcomp.2009.11.003
  8. Hajimohammadi, A. and Van Deventer, J.S.J. (2016), "Dissolution behaviour of source materials for synthesis of geopolymer binders: A kinetic approach", J. Min. Proc., 153, 80-86. https://doi.org/10.1016/j.minpro.2016.05.014
  9. Hardjito, D., Wallah, S.E., Sumajouw, D.M.J. and Rangan, B.V. (2004), "On the development of fly ash-based geopolymer concrete", ACI Mater. J., 101(6), 467-472.
  10. Heah, C.Y., Kamarudin, H., Mustafa Al Bakri, A.M., Binhussain, M., Luqman, M., Nizar, I.K., Ruzaidi, C.M. and Liew, Y.M. (2011), "Effect of curing profile on kaolin-based geopolymers", Phys. Proc., 22, 305-311. https://doi.org/10.1016/j.phpro.2011.11.048
  11. Joshi, S.V. and Kadu, M.S. (2012), "Role of alkaline activator in development of eco-friendly fly ash based geo polymer concrete", J. Environ. Sci. Develop., 3(5), 417-421.
  12. Katpady, D.N., Takewaka, K. and Yamaguchi, T. (2015), "Development of geopolymer with pyroclastic flow deposit called shirasu", Adv. Mater. Res., 4(3), 179-192. https://doi.org/10.12989/amr.2015.4.3.179
  13. Katpady, D.N., Takewaka, K., Yamaguchi, T., Moritaka, Y. and Tatara, Y. (2012), "Experimental study on deterioration monitoring of shirasu concrete in hot spring environment", J. Earth Sci. Eng., 5(4), 1020-1026.
  14. Kumar, S., Kumar, R. and Mehrotra, S.P. (2010), "Influence of granulated blast furnace slag on the reaction, structure and properties of fly ash based geopolymer", J. Mater. Sci., 45(3), 607-615. https://doi.org/10.1007/s10853-009-3934-5
  15. Kurklu, G. (2016), "The effect of high temperature on the design of blast furnace slag and coarse fly ash-based geopolymer mortar", Compos. Part B, 92, 9-18. https://doi.org/10.1016/j.compositesb.2016.02.043
  16. Lee, N.K., An, G.H., Koh, K.T. and Ryu, G.S. (2016), "Improved reactivity of fly ash-slag geopolymer by the addition of silica fume", Adv. Mater. Sci. Eng., 6, 1-11.
  17. Li, X., Wang, Z. and Jiao, Z. (2013), "Influence of curing on the strength development of calcium-containing geopolymer mortar", Mater., 6(11), 5069-5076. https://doi.org/10.3390/ma6115069
  18. Moon, J., Bae, S., Celik, K., Yoon, S., Kim K.H., Kim, K.S. and Monteiro, P.J.M. (2014), "Characterization of natural pozzolanbased geopolymeric binders", Cement Concrete Compos., 53, 97-104. https://doi.org/10.1016/j.cemconcomp.2014.06.010
  19. Nath, P. and Sarker, P.K. (2014), "Effect of GGBFS on setting, workability and early strength properties of fly ash geopolymer concrete cured in ambient condition", Constr. Build. Mater., 66, 163-171. https://doi.org/10.1016/j.conbuildmat.2014.05.080
  20. Nguyen, K.T., Lee, Y.H., Lee, J. and Ahn, N. (2013), "Acid resistance and curing properties for green fly ash-geopolymer concrete", J. Asian Architect. Build. Eng., 12(2), 317-322. https://doi.org/10.3130/jaabe.12.317
  21. Oh, J.E., Moon, J., Oh, S.G., Clark, S.M.P. and Monteiro, J.M. (2012), "Microstructural and compositional change of NaOHactivated high calcium fly ash by incorporating Na-aluminate and co-existence of geopolymeric gel and C-S-H(I)", Cement Concrete Res., 42(5), 673-685. https://doi.org/10.1016/j.cemconres.2012.02.002
  22. Perna, I. and Hanzlicek, T. (2016), "The setting time of a clay-slag geopolymer matrix: The influence of blast-furnace-slag addition and the mixing method", J. Clean. Prod., 112, 1150-1155. https://doi.org/10.1016/j.jclepro.2015.05.069
  23. Puertas, F., MartoAnez-RamoArez, S., Alonso, S. and VaAzquez, T. (2000), "Alkali-activated fly ash/slag cement, strength behaviour and hydration products", Cement Concrete Res., 30(10), 1625-1632. https://doi.org/10.1016/S0008-8846(00)00298-2
  24. Takewaka, K. (2004), "State-of-art-report on characteristics of shirasu concrete and its practical use", Concrete J., 42(3), 38-47. https://doi.org/10.3151/coj1975.42.3_38
  25. Takewaka, K. and Kawamata, K. (1991), "Durability of concrete using pyroclastic flow deposit for fine aggregates", Proceedings of the 2nd Canada/Japan Workshop, Ottawa, Canada.
  26. Tchakoute, H.K., Elimbi, A., Yanne, E. and Djangang, C.N. (2013), "Utilization of volcanic ashes for the production of geopolymers cured at ambient temperature", Cement Concrete Compos., 38, 75-81. https://doi.org/10.1016/j.cemconcomp.2013.03.010
  27. Temuujin, J., Van Riessen, A. and Williams, R. (2009), "Influence of calcium compounds on the mechanical properties of fly ash geopolymer pastes", J. Hazard. Mater., 167(1), 82-88. https://doi.org/10.1016/j.jhazmat.2008.12.121
  28. Ushaa, T.G., Anuradha, R. and Venkatasubramani, G.S.W. (2015), "Performance of self-compacting geopolymer concrete containing different mineral admixtures", Ind. J. Eng. Mater. Sci., 22, 473-481.
  29. Xu, H., Gong, W., Syltebo, L., Izzo, K., Lutze, W. and Pegg, I.L. (2014), "Effect of blast furnace slag grades on fly ash based geopolymer waste forms", Fuel, 133, 332-340. https://doi.org/10.1016/j.fuel.2014.05.018
  30. Yip, C.K., Lukey, G.C. and Van Deventer, J.S.J. (2005), "The coexistence of geopolymeric gel and calcium silicate hydrate at the early stage of alkaline activation", Cement Concrete Res., 35(9), 1688-1697. https://doi.org/10.1016/j.cemconres.2004.10.042