Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of Artificial Light-weight Aggregates of Uniform Bloating Properties Using a Temperature-raising Sintering Method

승온 소성법을 이용한 균일 발포 특성을 갖는 인공경량골재의 제조

  • Kang, Min-A (Department of Advanced Materials Engineering, Kyonggi University) ;
  • Kang, Seung-Gu (Department of Advanced Materials Engineering, Kyonggi University) ;
  • Lee, Gi-Gang (Department of Advanced Materials Engineering, Kyonggi University) ;
  • Kim, Yoo-Tack (Department of Advanced Materials Engineering, Kyonggi University)
  • 강민아 (경기대학교 신소재공학과) ;
  • 강승구 (경기대학교 신소재공학과) ;
  • 이기강 (경기대학교 신소재공학과) ;
  • 김유택 (경기대학교 신소재공학과)
  • Received : 2012.02.03
  • Accepted : 2012.02.28
  • Published : 2012.03.31
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Abstract

The temperature-rasing sintering method was used in this study to fabricate the aggregates of uniform pore size and distribution containing reject ash occurred in the thermal power plant. The spheric green aggregates made of reject ash were put into the box furnace of 800~$1000^{\circ}C$, heated with a heating rate of 5~$15^{\circ}C$/min to 1200~$1275^{\circ}C$, sintered for 10 min and then discharged out of the furnace to the room temperature. The input temperature, heating rate and sintering temperature increased the bloating phenomenon of the specimen, and the sintering temperature among them was the most effective factor. The aggregate manufactured at $1275^{\circ}C$ had the specific gravity of about 1.0 and water absorption of 1~2%, and the pores of 500~1,000 ${\mu}m$ were uniformly distributed across the whole specimen. Especially, the aggregates fabricated using the temperature-rasing sintering method in this study showed an excellent bloating properties and uniform microstructure without black core phenomenon which is typical for the bloated ceramics synthesized by direct sintering method.

Keywords

References

  1. The Monthly Report on Major Electric Power Statistics, No. 334, Korea Electric Power Corporation, 2007.
  2. Y. D. Jo, "Electric Industry and Environmental Effect" pp. 343-352 in Korea Electric Association, Electricity Almanac, Seoul, 2009.
  3. K. D. Kim, "A Study on Application and Fabrication of Functional Ceramics for Constructing Materials using Ecofriendly Waste Recycling Process," pp. 25-35, Ph. D. Thesis, Kyonggi University, Suwon, 2010.
  4. C. R. Austin, J. L. Nunes, and J. D. Sullivan, "Basic Factors Involved in Bloating of Clays," Am. Ins. Min. and Metal. Eng., Technical Publication, 1486 1-11 (1942).
  5. W. E. Brownell, "Black Coring in Structural Clay Products," J. Am. Ceram. Soc., 40 [6] 179-87 (1957). https://doi.org/10.1111/j.1151-2916.1957.tb12600.x
  6. C. M. Riley, "Relation of Chemical Properties to the Bloating of Clays," J. Am. Ceram. Soc., 34 [4] 121-28 (1951). https://doi.org/10.1111/j.1151-2916.1951.tb11619.x
  7. M. A. Kang and S. G. Kang, "Influence of Red Mud Additive on Lightening of Artificial Aggregates Containing Coal Bottom Ash," J. Kor. Cryst. Growth and Cryst. Tech., 21 [1] 41-46 (2011). https://doi.org/10.6111/JKCGCT.2011.21.1.041
  8. J. Y. Park, Y. T. Kim, K. G. Lee, S. G. Kang and J. H. Kim, "The Mechanism of Black Core Formation," J. Kor. Cryst. Growth and Cryst. Tech., 15 [5] 208-15 (2005).
  9. V. Z. Abdrakhimov and E. C. Abdrakhimova, "Formation of the Black Core in High-speed Firing of Floor Tiles," Glass and Ceramics, 56 [8] 30-2 (1999). https://doi.org/10.1007/BF02681400
  10. Y. P. Kareev, "Sandwich Structure in the Etruscan-Padan Type Pottery," Appl. Clay Sci., 27 119-28 (2004). https://doi.org/10.1016/j.clay.2004.03.003

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