Solid Mass Fractal Model for Pore Structure in Cement Paste

Article Preview

Abstract:

Though discussed a lot, it remains a practical challenge to modeling pore structure in cement paste. The fractal approach shows a great advantage since it allows to generate complex pore structure via simple geometric iterations and to incorporate the wide scope of pores in a self-similar manner. In this paper, the solid mass fractal model is proposed for pore structure in cement paste. The parametric analysis is performed in conjunction with the porosimetric test. It is shown that the proposed solid mass fractal well describes pore structure in cement paste.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

1084-1089

Citation:

Online since:

September 2016

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2016 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] H.M. Jennings, J.W. Bullard, J.J. Thomas, J.E. Andrade, J.J. Chen, G.W. Scherer. Characterization and modeling of pores and surfaces in cement paste: correlations to processing and properties. J. Adv. Concr. Technol. 6 (2008) 5-29.

DOI: 10.3151/jact.6.5

Google Scholar

[2] H.M. Jennings. Refinements to colloid model of C-S-H in cement: CM-II. Cem. Concr. Res. 38 (2008) 275-289.

Google Scholar

[3] K. van Breugel. Simulation of Hydration and Formation of Structure in Hardening Cement-Based Materials. PhD Thesis, Delft University of Technology, (1991).

Google Scholar

[4] D.P. Bentz, E.J. Garboczi. A digitized simulation model for microstructural development, in: S. Mindess (Ed. ), Advances in Cementitious Materials, American Ceramic Society, Westville, Ohio, USA, 211–226, (1989).

Google Scholar

[5] S. Bishnoi, K. Scrivener. μic: a new platform for modelling the hydration of cements. Cem. Concr. Res. 39 (2009) 266-274.

DOI: 10.1016/j.cemconres.2008.12.002

Google Scholar

[6] D.N. Winslow. The fractal nature of the surface of cement paste. Cem. Concr. Res. 15 (1985) 817-824.

Google Scholar

[7] D. Pearson, A.J. Allen. A study of ultrafine porosity in hydrated cements using small angle neutron scattering. J. Mater. Sci. 20 (1985) 303-305.

DOI: 10.1007/bf00555924

Google Scholar

[8] M. Kriechbaum, G. Degovics, J. Tritthart, P. Laggner. Fractal structure of portland cement paste during age hardening analyzed by small-angle X-ray scattering. Progr. Colloid. Polym. Sci. 79 (1989) 101-105.

DOI: 10.1007/bfb0116194

Google Scholar

[9] D.A. Lange, H.M. Jennings, S.P. Shah. Image analysis techniques for characterization of pore structure of cement-based materials. Cem. Concr. Res. 24 (1994) 841-853.

DOI: 10.1016/0008-8846(94)90004-3

Google Scholar

[10] D.N. Winslow, J.M. Bukowski, J.F. Young. The fractal arrangement of hydrated cement paste. Cem. Concr. Res. 25 (1995) 147-156.

DOI: 10.1016/0008-8846(94)00122-f

Google Scholar

[11] X. Ji, S.Y.N. Chan, N. Feng. Fractal model for simulating the space-filling process of cement hydrates and fractal dimensions of pore structure of cement-based materials. Cem. Concr. Res. 27 (1997) 1691-1699.

DOI: 10.1016/s0008-8846(97)00157-9

Google Scholar

[12] C. Atzeni, G. Pia, U. Sanna. Fractal modelling of medium-high porosity SiC ceramics. J. Eur. Ceram. Soc. 28 (2008) 2809-2814.

DOI: 10.1016/j.jeurceramsoc.2008.03.039

Google Scholar

[13] G. Ye. Experimental Study and Numerical Simulation of the Development of the Microstructure and Permeability of Cementitious Materials. PhD thesis, Delft University of Technology, (2003).

Google Scholar