Hostname: page-component-848d4c4894-ndmmz Total loading time: 0 Render date: 2024-05-06T04:00:11.797Z Has data issue: false hasContentIssue false
  • English
  • Français

Autoclave Expansion of Portland Cement-Fly Ash Pastes

Published online by Cambridge University Press:  25 February 2011

Scott Schlorholtz  and
Turgut Demirel
Scott Schlorholtz
Affiliation:
Iowa State University, Department of Civil Engineering, Ames, IA 50011
Turgut Demirel
Affiliation:
Iowa State University, Department of Civil Engineering, Ames, IA 50011
Get access

Abstract

The influence of the chemical composition of fly ash on the autoclave expansion of portland cement-fly ash pastes has been studied. The autoclave expansion tests were performed as described in ASTM C 151–81. Several of the cement-fly ash pastes tested exhibited severe expansive behavior. Free lime (CaO) was the only single variable that correlated well with the expansion observed in the autoclave tests. A multivariable model was generated in which lime, magnesium oxide, and tricalcium aluminate were the significant variables. The autoclave expansion of portland cement-fly ash pastes appears to be quite sensitive to the amount of free lime present in a given mixture.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 43: Symposium M – Fly Ash and Coal Conversion By-Products I , 1984 , 85
Copyright
Copyright © Materials Research Society 1985

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. Sawyer, J. L., “Volume Change,” ASTM STP 169B (1978).Google Scholar
2. Mehta, P. K., “History and Status of Performance Tests for Evaluation of Soundness of Cements,” ASTM STP 663 (1978).Google Scholar
3. Lea, F. M., The Chemistry of Cement and Concrete, Chemical Publishing Co. (1971).Google Scholar
4. Bogue, R. H., The Chemistry of Portland Cement, Reinhold Pub. Co. (1955).Google Scholar
5. Ramachandran, V. S., Feldman, R. F., and Beaudoin, J. J., Concrete Science, Heyden Pub. Co. (1981).Google Scholar
6. Young, R. N., Proc. of ACI, 34 (Sept.-Oct., 1937).Google Scholar
7. Weast, R., editor, Handbook of Chemistry and Physics, CRC Press (1978).Google Scholar
8. Berry, L., editor, Selected Powder Diffraction Data for Minerals, JCPDS (1974).Google Scholar
9. Levine, I. N., Physical Chemistry, McGraw-Hill Pub. Co. (1978).Google Scholar
10. American Society for Testing and Materials, 1981 Annual Book of ASTM Standards, Part 13 (1981).Google Scholar
11. Mings, M. L., “Effect of Fly Ash Reactivity on Fly Ash Paste,” Unpublished M.S. Thesis, Iowa State University (1982).Google Scholar
12. Mings, M. L., Schlorholtz, S., Pitt, J. M., and Demirel, T., Transportation Research Record, 5 (1983).Google Scholar
13. Pitt, J. M., Mings, M. L., and Schlorholtz, S., Transportation Research Record 941 (1983).Google Scholar
14. Helwig, J. and Council, K., editors, SAS Users Guide, SAS Institute (1979).Google Scholar
15. Gonnerman, H. F., Lerch, W., and Whiteside, T. M., PCA Laboratory Bulletin 45 (June 1953).Google Scholar