Browse > Article

Characterization of Leaching Behaviour of Recycled Concrete for Environmental Assessment  

Kang, S.H. (Environmental Engineering Section, The Catholic University of Korea)
Lee, S.H. (Environmental Engineering Section, The Catholic University of Korea)
Kwak, K.S. (Geotechnical Engineering Research Department, Korea Institute of Construction Technology)
Lee, J.Y. (Geotechnical Engineering Research Department, Korea Institute of Construction Technology)
Chung, M.K. (Geotechnical Engineering Research Department, Korea Institute of Construction Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.27, no.3, 2005 , pp. 293-301 More about this Journal
Abstract
We conducted several different leaching experiments for assessing the potential environmental risk when utilizing recycled concrete for stabilizing bridge pier. The methods include continuous batch leaching test (DIN 38414-S4), availability test (NEN 7341), pH-stat test (CEN/TC 292/WG6) and tank diffusion test (NEN 7345). The concentration ranges vary depending on the testing method. Nearly all the trace elements were low, some elements recording under detection limit. The maximum concentrations for trace elements leached throughout the whole tests are (as mg/L); Cd (0.029), Cu (0.437), Pb (0.14), Ni, Zn (0.95), Hg (0.005). Although the testing methods we used in this study are much more rigorous than other commonly adapted method including TCLP and domestic testing method for solid waste, the trace elemental concentrations are under the criteria for hazardous material set by the TCLP and domestic method. The result seems to suggest that applying the recycled concrete on stream water will be accepatable practice as for as trace elements are concerned. However, the influence of inorganics such as Ca, Mg, Ni and $SO_4^{2-}$ on aquatic ecology should be further examined.
Keywords
Recycled Concrete; Leaching Test; Heavy Metals; Environmental Assessment;
Citations & Related Records
연도 인용수 순위
  • Reference
1 van der Sloot, H. A., 'Characterization of the leaching behaviour of concrete mortars and of cement-stabilized wastes with different waste loading for long-term environmental assessment,' Waste management, 22, 181-186 (2002)   DOI   ScienceOn
2 Hage, J. L. T. and Mulder, E., 'Preliminary assessment of three new European leaching tests,' Waste management, 24, 165-172(2004)   DOI   ScienceOn
3 Wahlstrom, M., Laine-Ylijoki, J., Maattanen, A., Luotojarvi, T., and Kivekas, L., 'Environmental quality assurance for use of crushed mineral demolition wastes in road constructions,' Waste management, 20, 225-232 (2000)   DOI   ScienceOn
4 Tiruta-Barna, L., Imyim, A., and Barna, R., 'Long-term prediction of the leaching behaviour of pollutants from solidified wastes,' Advances in Environmental Research, 8, 697-711(2004)   DOI   ScienceOn
5 이용수, 현채혁, 정하익, 정형식, '폐콘크리트의 유효활 용을 위한 환경특성 평가,' 한국지반공학회논문집, 17(2), 143-150(2001)
6 Kylefors, K., Andreas, L., and Largerkvist, A., 'A comparison of small-scale, pilot scale and large scale tests for predicting leaching behaviour of landfill wastes,' Waste management, 23, 45-59(2003)   DOI   ScienceOn
7 Hohberg, I., de Groot, G. J., van der Veen, A. M. H., and Wassing, W., 'Development of a leaching protocol for concrete,' Waste management, 20, 177-184(2000)   DOI   ScienceOn
8 Fallman, A. M., 'Performance and design of the availability test for measurement of potentially leachable amounts from waste material,' Environ. Sci. Technol., 31, 735-744(1997)   DOI   ScienceOn
9 Todorovic, J. and Ecke, H., 'Leaching tests for assessment of mobility of inorganic contaminants from solidified incineration residues-Literature review. Report No. 2004:01,' Division of Waste science and technology, Lulea University of Technology, Sweden(2004)