The hydration of ordinary Portland cement at room temperature was studied in the presence of silica fume. The silica fume content was 0, 5, 10, 15 and 20 wt% of the weight of cement for all mixtures. The mixtures were stirred in 100 ml deionised water for different time intervals up to 7 days. The filtered solutions were analysed for pH, silicon and calcium ions. Most of the calcium hydroxide released during the hydration of Portland cement had reacted with the silica fume within 7 days. The X-ray diffraction and scanning electron microscopy studies on the hydration products showed a considerable reduction in the amount of calcium hydroxide as a result of its reaction with silica fume. The optimum condition was obtained by the addition of 20% silica fume.
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July 2010
Research Article|
July 01 2010
Hydration of Portland cement in presence of silica fume
E.A. Kishar;
E.A. Kishar
*
Chemistry Department, Ain Shams University, Cairo, Egypt
* Chemistry Department, College for Women, Ain Shams University, Cairo, Egypt.
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D.A. Ahmed;
D.A. Ahmed
*
Chemistry Department, Ain Shams University, Cairo, Egypt
* Chemistry Department, College for Women, Ain Shams University, Cairo, Egypt.
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M.R. Mohammed
M.R. Mohammed
*
Chemistry Department, Ain Shams University, Cairo, Egypt
* Chemistry Department, College for Women, Ain Shams University, Cairo, Egypt.
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* Chemistry Department, College for Women, Ain Shams University, Cairo, Egypt.
Publisher: Emerald Publishing
Received:
November 25 2009
Accepted:
November 25 2009
Online ISSN: 1751-7605
Print ISSN: 0951-7197
© 2010 Thomas Telford Ltd
2010
Advances in Cement Research (2010) 22 (3): 143–148.
Article history
Received:
November 25 2009
Accepted:
November 25 2009
Citation
Kishar E, Ahmed D, Mohammed M (2010), "Hydration of Portland cement in presence of silica fume". Advances in Cement Research, Vol. 22 No. 3 pp. 143–148, doi: https://doi.org/10.1680/adcr.2010.22.3.143
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