Hydration of Portland Cement in the Presence of Highly Reactive Metakaolin

DOI: 10.4236/msa.2015.65044   PDF   HTML     3,419 Downloads   4,118 Views   Citations


The degree of conversion of highly reactive metakaolin in Portland cement metakaolin paste at different ages as well as the influence of metakaolin on the degree of hydration of Portland cement and composition of C-S-H is investigated by 27Al- and 29Si-MAS NMR spectroscopy. At the age of 7 days, in the paste with 10% of metakaolin, the additive is completely consumed. In the 30% substituted cement paste, the content of metakaolin remains quite high (about 40% of the initial amount) even after 3 months of hydration. At the age of 1 - 3 months, the degree of Portland cement hydration in the presence of metakaolin is of 15% - 20% less than without it, probably, due to deficit of water or spatial restrictions. After 7 days of hydration, about half of C-S-H consists of material derived from metakaolin. Metakaolin mainly contributes to Q2 and Q2 (1Al) species, whereas PC does to Q1. After 1 day of hydration, an amount of ettringite in cement paste with high dosage of metakaolin is higher than in pure PC paste.

Share and Cite:

Brykov, A. , Krasnobaeva, S. and Mokeev, M. (2015) Hydration of Portland Cement in the Presence of Highly Reactive Metakaolin. Materials Sciences and Applications, 6, 391-400. doi: 10.4236/msa.2015.65044.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Siddique, R. and Khan, M.I. (2011) Supplementary Cementing Materials. Springer, Berlin.
[2] Siddique, R. and Klaus, J. (2009) Influence of Metakaolin on the Properties of Mortar and Concrete. Applied Clay Sci- ence, 43, 392-400.
[3] Poon, C.-S., Lam, L., Kou, S.C., et al. (2001) Rate of Pozzolanic Reaction of Metakaolin in High-Performance Cement Pastes. Cement and Concrete Research, 31, 1301-1306.
[4] Newman, J. and Choo, B.S. (2003) Advanced Concrete Technology. Constituent Materials. Elsevier.
[5] Curcio, F., De Angelis, B.A. and Pagliolico, S. (1998) Metakaolin as a Pozzolanicmicrofiller for High-Performance Mortars. Cement and Concrete Research, 28, 803-809.
[6] Shui, Zh., Sun, T., Fu, Zh. and Wang, G. (2010) Dominant Factors on the Early Hydration of Metakaolin-Cement Paste. Journal of Wuhan University of Technology, 25, 849-852.
[7] Kadri, E.-H., Kenai, S., Ezziane, K., et al. (2011) Influence of Metakaolin and Silica Fume on the Heat of Hydration and Compressive Strength Development of Mortar. Applied Clay Science, 53, 704-708.
[8] Badogiannis, E., Kakali, G., Dimopoulou, G., et al. (2005) Metakaolin as a Main Cement Constituent. Exploitation of Poor Greek Kaolins. Cement and Concrete Composites, 27, 197-203.
[9] Janotka, I., Puertas, F., Palacios, M., et al. (2010) Metakaolin Sand-Blended-Cement Pastes: Rheology, Hydration Process and Mechanical Properties. Construction and Buildings Materials, 24, 791-802.
[10] Lagier, F. and Kurtis, K.E. (2007) Influence of Portland Cement Composition on Early Age Reactions with Metakaolin. Cement and Concrete Research, 37, 1411-1417.
[11] Fernandez, R., Martirena, F. and Scrivener, K.L. (2011) The Origin of the Pozzolanic Activity of Calcined Clay Minerals: A Comparison between Kaolinite, Illite and Montmorillonite. Cement and Concrete Research, 41, 113-122.
[12] Skibsted, J. and Hall, C. (2007) Characteration of Cement Minerals, Cements and Their Reaction Products at the Ato- mic and Nanoscale Level. 12th International Congress on the Chemistry of Cement, Montréal, 8-13 July 2007, 1-44.
[13] Coleman, N.J. and McWhinnie, W.R. (2000) The Solid State Chemistry of Metakaolin-Blended Ordinary Portland Cement. Journal of Materials Science, 35, 2701-2710.
[14] Love, C.A., Richardson, I.G. and Brough, A.R. (2007) Composition and Structure of C-S-H in White Portland Cement-20% Metakaolin Pastes Hydrated at 25oC. Cement and Concrete Research, 37, 109-117.
[15] Li, C., Sun, H. and Li, L. (2010) The Comparison between Alkali-Activated Slag (Si + Ca) and Metakalin (Si + Al) Cements. Cement and Concrete Research, 40, 1341-1349.

comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.