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Properties of Chemically Activated MSWI(Municipal Solid Waste Incinerator) Mortar

도시 폐기물 소각재를 이용한 화학적 활성화 모르타르의 특성

  • Jo, Byung-Wan (Dept. of Civil Engineering, Hanyang University) ;
  • Kim, Kwang-Il (Dept. of Civil Engineering, Hanyang University) ;
  • Park, Jong-Chil (Dept. of Civil Engineering, Hanyang University / Highway and Transportation Technology Institute) ;
  • Park, Seung-Kook (Dept. of Civil Engineering, Hanyang University)
  • 조병완 (한양대학교 토목공학과) ;
  • 김광일 (한양대학교 토목공학과) ;
  • 박종칠 (한양대학교 토목공학과 / 한국도로공사 도로교통기술원) ;
  • 박승국 (한양대학교 토목공학과)
  • Published : 2006.10.31

Abstract

The recycling of industrial wastes in the concrete manufacturing is of increasing interest worldwide, due to the high environmental impact of the cement and concrete industries and to the rising demand of infrastructures, both in industrialized and developing countries. The production of municipal wastes in the South Korea is estimated at about 49,902 ton per day and only 14.5% of these are incinerated and principally disposed of in landfill. These quantities will increase considerably with the growth of municipal waste production, the progressive closing of landfill, so the disposal of municipal solid waste incinerator(MSWI) ashes has become a continuous and significant issue facing society, both environmentally and economically. MSWI ash is the residue from waste combustion processes at temperature between $850^{\circ}C\;and\;1,000^{\circ}C$. And the main components of MSWI ash are $SiO_2,\;CaO\;and\;Al_2O_3$. The aim of this study is to find a way to useful application of MSWI ash(after treatment) as a structural material and to investigates the hydraulic activity, compressive strength development composition variation of such alkali-activated MSWI ashes concrete. And it was found that early cement hydration, followed by the breakdown and dissolving of the MSWI-ashes, enhanced the formation of calcium silicate hydrates(C-S-H). The XRD and SEM-EDS results indicate that, both the hydration degree and strength development are closely connected with a curing condition and a alkali-activator. Compressive strengths with values in the 40.5 MPa were obtained after curing the activated MSWI ashes with NaOH+water glass at $90^{\circ}C$.

References

  1. 환경부, 국립환경연구원, '2002 전국 폐기물 발생 및 처리현황', 환경부, 2003
  2. 환경관리공단, '소각재 안정화 및 재활용기술에 관한 연구', 환경관리공단, 2000. 9
  3. Speiser, C. and Baumann, T., 'Characterization of municipal solid waste incineration (MSWI) bottom ash by scanning electron microscopy and quantitative energy dispersive X-ray microanalysis (SEM/EDX)', Fresenius. J. Anal. Chem., No.370, 2001, pp.752-759 https://doi.org/10.1007/s002160000659
  4. W, K. S., Lin, K. L., and Huang, Z. Q., 'Hydraulic activity of municipal solid waste incinerator fly-ash-slag-blended eco-cement', Cement and Concrete Research, Vol.31, 2001, pp.97-103 https://doi.org/10.1016/S0008-8846(00)00423-3
  5. Palomo, A., M. W. and Grutzeck. M. T. Blanco, 'Alkali-activated fly ashes, A cement for the future', Cement and Concrete Research, Vo.29, 1999, pp.1323-1329 https://doi.org/10.1016/S0008-8846(98)00243-9
  6. Gruyzeck, M., Kwan, Stephen., and Dicola, M., 'Zeolite formation in alkali-activated cementitious systems', Cement and Concrete Research, Vo1.34, 2004, pp.949-955 https://doi.org/10.1016/j.cemconres.2003.11.003
  7. Jeannet, A. Meima and Rob Comans, N. J., 'Geochemical Modeling of Weathering Reactions in Muncipal Solid Waste Incinerator Bottom ash', Environmental Science & Technology, Vol.31, No.5, 1997, pp.1269-1276 https://doi.org/10.1021/es9603158
  8. Lin, C. Fang. and Hsi, H. C., 'Resource Recovery of Waste Fly Ash: Synthesis of Zeolite-like Materials', Environmental Science & Technology, Vol.29, No.4, 1995, pp.1109-1117 https://doi.org/10.1021/es00004a033
  9. Pecqueur, G., Crignon, C., and Quenee, B., 'Behaviour of cement-treated MSWI bottom ash', Waste Management, Vo.21, 2001, pp.229-233 https://doi.org/10.1016/S0956-053X(00)00094-5
  10. Mulder, E., 'Pre-tretrnent of MSWI fly ash for useful application', Waste Management, Vol.16, Nos.1-3, 1996, pp.181-184 https://doi.org/10.1016/S0956-053X(96)00040-2
  11. ACI Committee 318, Building Code Requirement for Structural Concrete and Commentary, American Concrete Institute, 2005

Cited by

  1. A Study on the Leachate Characteristics of Heavy Metals from MSW Bottom Ash Solidified with Stabilizing Reagents vol.26, pp.6, 2015, https://doi.org/10.14478/ace.2015.1099