Browse > Article
http://dx.doi.org/10.6111/JKCGCT.2013.23.4.201

Effect of activated carbon on bloating properties of artificial lightweight aggregates containing coal reject ash and bottom ash  

Kang, Min A (Department of Advanced Materials Engineering, Kyonggi University)
Kang, Seunggu (Department of Advanced Materials Engineering, Kyonggi University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.23, no.4, 2013 , pp. 201-206 More about this Journal
Abstract
The coal bottom ash and reject ash discharged from a coal-fired power plant are difficult to recycle so most of them are mainly landfill-disposed. In this study, the artificial aggregate were produced using reject ash, bottom ash and dredged soil emitted from the coal-fired power plant in Korea and the effect of experimental factors on the bloating behavior and the properties of the aggregates were analyzed. In particular, a lot of unburned carbon in the reject ash was removed by calcination and the activated carbon was added to batch powders then the dependence of those process upon bloating properties of artificial aggregate were investigated. For this purpose, the specific gravity and water absorption values of artificial aggregates were investigated in conjunction with microstructural observations. This study could contribute to increase the recycling rate of the reject ash.
Keywords
Artificial aggregate; Bloating; Carbon; Reject ash; Coal bottom ash; Recycling; Calcination;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 M.A. Kang and S.G. Kang, "Characterization of artificial aggregates fabricated from coal bottom ash containing much unburned carbon", J. Kor. Cryst. Growth and Cryst. Tech. 21[1] (2011) 47.   과학기술학회마을   DOI   ScienceOn
2 K.D. Kim and S.G. Kang, "Characterization of artificial aggregates fabricated with direct sintering method", J. Kor. Cryst. Growth and Cryst. Tech. 21[1] (2011) 34.   과학기술학회마을   DOI   ScienceOn
3 Korea Electric Power Industrial Development Corporation, http://www.kepid.co.kr.
4 K.J. Kwon, "Utilization of fly ash & bottom ash as concrete materials", J. Arch. Ins. Kor. 54[2] (2010) 46.
5 A. Barba, F. Negre, M.J. Orts and A. Escardino, "Oxidation of black coring during the firing of ceramic ware-3. Influence of the thickness of the piece and the composition of the black core", Br. Ceram. Trans. and Jour. 91 (1992) 36.
6 K.D. Kim, "A Study on application and fabrication of functional ceramics for constructing materials using ecofriendly waste recycling process", Doctoral dissertation, Kyonggi University (2010).
7 W.E. Brownell, "Black coring in structural clay products", J. Am. Ceram. Soc. 40(6) (1957) 179.   DOI
8 K.J.D. MacKENZIEA and C. M. Cardile, "$A^{57}Fe$ Mossbauer study of black coring phenomena in clay-based ceramic materials", J. Mater. Sci. 25 (1990) 2937.   DOI   ScienceOn