Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-29T06:23:30.281Z Has data issue: false hasContentIssue false
  • English
  • Français

Hydraulic Properties of Fluidized Bed Combustion Ashes

Published online by Cambridge University Press:  21 February 2011

I. Odler  and
K. -H. Zysk
I. Odler
Affiliation:
Technical University Clausthal, Institute of Nonmetallic Materials, Zehntnerstrasse 2A, D-3392 Clausthal-Zellerfeld, Federal Republic of Germany
K. -H. Zysk
Affiliation:
Technical University Clausthal, Institute of Nonmetallic Materials, Zehntnerstrasse 2A, D-3392 Clausthal-Zellerfeld, Federal Republic of Germany
Get access

Abstract

Seven fluidized bed combustion ashes of different composition were studied as to their hydraulicity and pozzolanicity. Four of them exhibited hydraulic reactivity and hardened when mixed with water. All of them exhibited a positive effect on strength development if used as constituents of blended cements. However, the presence of significant amounts of Fe2+ and free lime in the ash, as well as excessive amounts of SO3 in the produced cement caused unsoundness associated with the decline of flexural strength after longer hydration times.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 178: Symposium W – Fly Ash and Coal Conversion By-Products VI , 1989 , 189
Copyright
Copyright © Materials Research Society 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Lotze, J. and Wargalla, G., Characteristic data and utilization possibilities of ash from a circulating fluidized bed furnace (in German), Zement-Kalk-Gips, 38, pp.239–243 and 374–378, (1985)Google Scholar
2. Lotze, J. and Wargalla, G., Utilization possibilities of ashes produced in the first full scale ZWS (circulating fluidized bed) combustion unit (in German), Schriftenreihe GDMB, Nr.47, pp.267–285, (1986)Google Scholar
3. Barry, E.E. and Anthony, E.J., Evaluation of potential uses of AFBC solid wastes, Mat. Res. Soc. Symp. Proc., 86, pp.353–364, (1987)Google Scholar
4. Barry, E.E., Jones, C.E., Rose, J.G. and Harness, J.L., Performance characteristics of concrete produced with fluidized bed combustion ash residue, Mat, Res. Soc. Symp. Proc., 136, pp.23–36, (1988)Google Scholar
5. Odler, I. and Zysk, K-H., Characterization of products of primary flue gas desulphurization, Mat. Res. Soc. Symp. Proc., 113, pp.179–185, (1987)Google Scholar
6. Odler, I. and Zysk, K.-H., Investigations on the composition of individual fly ash and CFI-ash particles, Mat. Res. Soc. Symp. Proc., 136, pp.131–137, (1988).Google Scholar