Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-29T06:57:28.237Z Has data issue: false hasContentIssue false
  • English
  • Français

The Microstructure of Portland Cement-Based Materials: Computer Simulation and Percolation Theory

Published online by Cambridge University Press:  10 February 2011

Edward J. Garboczi  and
Dale P. Bentz
Edward J. Garboczi
Affiliation:
National Institute of Standards and Technology 226/B350 Gaithersburg, MD 20899
Dale P. Bentz
Affiliation:
National Institute of Standards and Technology 226/B350 Gaithersburg, MD 20899
Get access

Abstract

Portland cement-based materials are usually composites, where the matrix consists of portland cement paste. Cement paste is a material formed from the hydration reaction of portland cement, usually a calcium silicate material, with water. The microstructure of cement paste changes drastically over a time period of about one week, with slower changes occurring over subsequent weeks to months. The effect of this hydration process on the changing microstructure can be represented using computer simulation techniques applied to three dimensional digital image-based models. Percolation theory can be used to understand the evolving microstructure in terms of the three percolation thresholds that are of importance in the cement paste microstructure: the set point, capillary porosity percolation, and the percolation of the C-S-H phase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 529: Symposia BB – Computational & Mathematical Models of Microstructural Evolution , 1998 , 89
Copyright
Copyright © Materials Research Society 1998

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] Hammersley, J.M., Proc. Cambridge Phil. Soc. 53, 642 (1957).Google Scholar
[2] Garboczi, E.J., Thorpe, M.F., DeVries, M., and Day, A.R., Phys. Rev. A 43, 6473–6482 (1991).Google Scholar
[3] Garboczi, E.J., Snyder, K.A., Douglas, J.F., and Thorpe, M.F., Phys. Rev. E 52, 819–828 (1995).Google Scholar
[4] Stauffer, D. and Aharony, A., Introduction to Percolation Theory (2ed ed.) (Taylor and Francis, London, 1992).Google Scholar
[5] Garboczi, E.J., Bentz, D.P., and Martys, N.S., “Digital imaging and pore morphology, ” in Experimental Methodsfor Porous Materials, edited by Wong, P. (Academic Press. New York, 1999).Google Scholar
[6] Bentz, D.P. and Garboczi, E.J., Cement and Concrete Research 21, 325–344 (1991).Google Scholar
[7] Bentz, D.P., J. Amer. Ceram. Soc. 80, 3–21 (1997).Google Scholar
[8] Chen, Y. and Odler, I., On the Origin of Portland Cement Setting, Cem. Conc. Res. 22, 1130–1140(1992).Google Scholar
[9] Bentz, D.P., Garboczi, E.J., and Martys, N.S., in Proceedings of 1994 NATO/RILEM Workshop The Modelling of Microstructure and Its Potential for Studying Transport Properties and Durability, edited by Jennings, H.M., pp. 167–186. See also http://ciks.cbt.nist.gov/garboczi/, Appendix 1.Google Scholar
[10] Coverdale, R.T., Christensen, B.J., Mason, T.O., Jennings, H.M., Garboczi, E.J., and Bentz, D.P., J. Mater. Sci. 30, 712–719 (1995).Google Scholar
[11] Christensen, B.J., Mason, T.O., Jennings, H.M., Bentz, D.P., and Garboczi, E.J., in Advanced Cementitious Systems: Mechanisms and Properties, edited by Glasser, F.P., McCarthy, G.J., Young, J.F., Mason, T.O., and Pratt, P.L. (Materials Research Society Symposium Proceedings Vol. 245, Pittsburgh, 1992), pp. 259–264.Google Scholar
[12] Garboczi, E.J. and Bentz, D.P., J. Mater. Sci. 27, 2083–2092 (1992).Google Scholar
[13] Olson, R.A., Christensen, B.J., Coverdale, R.T., Ford, S.J., Moss, G.M., Jennings, H.M., Mason, T.O., and Garboczi, E.J., J. Mater. Sci. 30, 5078–5086 (1995).Google Scholar
[14] Scrivener, K.L. and Gartner, E.M., in Bonding in Cementitious Composites, ed. Mindess, S. and Shah, S.P. (Materials Research Society, Pittsburgh, 1988), pp. 77–85.Google Scholar
[15] Balberg, I., Philo. Mag. B 56, 991 (1987); I. Balberg and N. Binenbaum, Phys. Rev. A 35, 5174 (1987); S.B. Lee and S. Torquato, J. Chem. Phys. 89, 3258 (1988); S. Torquato, J. Chem. Phys. 85, 6248 (1986).Google Scholar
[16] Winslow, D.N., Cohen, M.D., Bentz, D.P., Snyder, K.A., and Garboczi, E.J., Cement and Concrete Research 24, 25–37 (1994).Google Scholar