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A Study of Low Porosity Polymerized β-C2S Paste

Published online by Cambridge University Press:  21 February 2011

Lu Ping ,
Zhao Jing  and
Shen Wei
Lu Ping
Affiliation:
Department of Materials Science and Engineering, Tongji University, Shanghai 200092, China
Zhao Jing
Affiliation:
Department of Materials Science and Engineering, Tongji University, Shanghai 200092, China
Shen Wei
Affiliation:
Department of Materials Science and Engineering, Tongji University, Shanghai 200092, China
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Abstract

In this paper an active β-C2S was used to prepare compacted and polymerized pastes with low porosity. X-ray diffraction (XRD), mercury intrusion porosimetry (MIP), scanning electron microscopy (SEM), and tri-methy silanation-gel permeation chromatography (TMS-GPC) techniques were used to characterize the microstructure of the pastes both before and after additions of inorganic complexing ions, Fe2+ and Ni2+, and organic silane VTES.

The results indicate that both inorganic complexing ions and organic silane can play a role in the polymerization of the native silicate anions in the cement pastes. These materials lead to a distinct increase of pentamer, octamer, and polymer components in the pastes, resulting in a decrease in the average C/S ratio in the C-S-H phase. The samples obtained from this processing have very high mechanical strengths, up to a compressive strength of 316 MPa, and fracture surface energy of 43 J/m2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 179: Symposium Y – Specialty Cements with Advanced Properties , 1989 , 235
Copyright
Copyright © Materials Research Society 1991

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References

1. Roy, D. M. and Gouda, G. R., Cem. Concr. Res., 2, 349 (1972).Google Scholar
2. Roy, D. M. and Gouda, G. R., Cem. Concr. Res., 5, 153 (1975).Google Scholar
3. Birchall, J. D., Howard, A. J., and Kendall, K., Nature, 289, 338 (1981).Google Scholar
4. Wise, S., Satkowski, J. A., Scheetz, B., Rizer, J. M., Mackenzie, M. L., and Double, D. D., “Very High Strength Cement-Based Materials” (edited by Young, J. F.), MRS, 42, 253 (1985).Google Scholar
5. Wise, S., Jones, K., Herzfeld, C., and Double, D. D., MRS Symp. Proc., 114, 197 (1988).Google Scholar
6. Roy, D. M., Science, 235, 651 (1987).Google Scholar
7. Young, J. F., Berger, R. L., and Thomas, A. B., 1989 (annual report to be published).Google Scholar
8. Ping, L. and Yuinyuan, H., 8th Int. Congr. Chem. Cem., 3, 343 (1986).Google Scholar
9. Ping, L., Jun, F., and Wei, S., 2nd Int. Symp. Brittle Matr. Comp., Poland (1988).Google Scholar
10. Nanru, Y. et al., Journal of the Chinese Silicate Society, 14, 385 (1986).Google Scholar