Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Carbonation Behavior of Lightweight Foamed Concrete Using Coal Fly Ash

  • Lee, Jae Hoon (Department of Advanced Material Science and Engineering, Kyonggi University) ;
  • Lee, Ki Gang (Department of Advanced Material Science and Engineering, Kyonggi University)
  • Received : 2016.01.26
  • Accepted : 2016.04.06
  • Published : 2016.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to prepare lightweight foamed concrete by mixing coal fly ash of circulating fluidized bed combustion(CFBC) with cement, and to develop uses for recycling by analyzing carbonation behavior resulting from a change in conditions for pressurized carbonation. For concrete, CFBC coal fly ash was mixed with Portland cement to the water-binder ratio of 0.5, and aging was applied at room temperature after 3 days of curing at $20^{\circ}C$, RH 60%. For carbonation, temperature was fixed at $60^{\circ}C$ and time at 1 h in the use of autoclave. Pressures were controlled to be $5kgf/cm^2$ and the supercritical condition of $80kgf/cm^2$, and gas compositions were employed as $CO_2$ 100% and $CO_2$ 15%+N2 85%. In the characteristics of produced lightweight concrete, the characteristics of lightweight foamed concrete resulting from carbonation reaction were affirmed through rate of weight change, carbonation depth test, air permeability, and processing analysis for the day 28 specimen. Based on these results, it is concluded that the present approach could provide a viable method for mass production of eco-friendly lightweight foamed concrete from CFBC coal fly ash stabilized by carbonation.

Keywords

References

  1. D. Counce, F. Goff, E. Kluk, G. Guthrie, B. Lipin, M. Fite, S. Chipera, and H. Ziock, "Evaluation of Ultramafic Deposits in the Eastern United States and Puerto Rico as Sources of Magnesium for Carbon Dioxide Sequestration," Los Alamos National Laboratory, http://www.lanl.gov. Accessed on 15/11/2015.
  2. K. S. Lackner, C. H. Christopher, D. P. Butt, E. L. Joyce, and D. H. Sharp, "Carbon Dioxide Disposal in Carbonate Minerals," Energy, 20 [11] 1153-70 (1995). https://doi.org/10.1016/0360-5442(95)00071-N
  3. K. S. Lackner, D. P. Butt, and C. H. Wendt, "Magnate Disposal of Carbon Dioxide"; pp. 419-30 in Proceedings of the 22nd International Technical Conference on Coal Utilization and Fuel System, Clearwater, Florida, United States, 1997.
  4. K. S. Lackner, P. F. Duby, T. Yegulalp, S. Krevor, and C. Graves, "Integrating Steel Production with Mineral Carbon Sequestration," U. S. Department of Energy, AISI/DOE Technology Roadmap Program for the Steel Industry, Final Report - TRP9957, http://www.osti.gov/bridge, Accessed on 18/07/2015.
  5. Y. N. Jang, C. Y. Bae, S. C. Chae, I. K. Bae, and G. W. Ryu "Mineral Carbonation of Gypsum," J. Kor. Petrol. Soc., 21 [4] 62-3 (2008).
  6. W. S. Kim, T. K. Kang, M. S. Paik, S. S. Kim, and S. J. Jung, "The Experimental Study on Carbonation Properties of High Volume Fly-ash Concrete," J. Kor. Archi. Ins., 23 [1] 207-10 (2003).
  7. I. T. Kim, H. Y. Kim, G. I. Park, J. H. Yoo, and J. H. Kim, "Effect of Carbonation Reaction of Portlandite with Supercritical Carbon Dioxide on the Characteristics of Cement Matrix," Appl. Chem., 5 [1] 60-3 (2001).
  8. H. S. Ahn, J. S. Kim, and H. S. Lee, "A Study on Fixed Amount of $CO_2$ and the Estimation of Production of $CaCO_3$ on Waste Concrete Powder by Wet Carbonation," J. Kor. Archi. Inst, 27 [7] 133-40 (2011).
  9. M. Stehlik and J. Novak, "Verification of the Effect of Concrete Surface Protection on the Permeability of Acid Gases Using Accelerated Carbonation Depth Test in an Atmosphere of 98% $CO_2$," Ceram.-Silik., 55 [1] 79-84 (2011).
  10. M. K. Mohammed, A. R. Dawson, and N. H. Thom, "Carbonation of Filler Typed Self-Compacting Concrete and its Impact on the Microstructure by Utilization of 100% $CO_2$ Accelerating Techniques," Constr. Build. Mater., 50 [15] 508-16 (2014). https://doi.org/10.1016/j.conbuildmat.2013.09.052
  11. C. D. Atis, "Accelerated Carbonation and Testing of Concrete Mead with Fly Ash," Constr. Build. Mater., 17 [3] 147-50 (2003). https://doi.org/10.1016/S0950-0618(02)00116-2
  12. J. Y. Park, Y. T. Kim, and Y. J. Choi, "Property Enhancement of Lightweight Aggregate by Carbonation Processing," J. Kor. Cryst Growth Cryst. Technol., 22 [5] 254-59 (2012). https://doi.org/10.6111/JKCGCT.2012.22.5.254

Cited by

  1. Utilization of Fly Ashes from Fluidized Bed Combustion: A Review vol.12, pp.7, 2016, https://doi.org/10.3390/su12072988
  2. Research on Porosity and Performance of Self-compacting Backfill Materials vol.2011, pp.1, 2021, https://doi.org/10.1088/1742-6596/2011/1/012016