%0 Journal Article
%T INFLUENCE OF SUBSTITUTION OF ORDINARY PORTLAND CEMENT BY SILICA FUME ON THE HYDRATION OF SLAG-PORTLAND CEMENT PASTES
%A E.A. El-Alfi
%A A.M. Rad wan
%A H. Abu -EL-Naga
%J Ceramics-Silik¨¢ty
%D 2011
%I Academy of Sciences of the Czech Republic
%X Effect of gradual substitution of ordinary Portland cement by a few percent of silica fume (0.0, 2.5, 5.0 and 7.5 wt.%) on the hydration properties of slag-Portland cement pastes up to 12 months was investigated. The results show that the composite cement pastes containing silica fume give the higher physico-mechanical properties than that of the slag-Portland cement. Also, the XRD results reveal that the peak of Ca(OH)2 shows higher intensity in the sample without silica fume and completely disappears in the sample containing 7.5 wt.% silica fume content. Also, the intensity peaks of C4AH13 sharply increase with silica fume content.
%K Cement hydration
%K Slag
%K Silica Fume
%K Composite cement pastes
%U http://www.ceramics-silikaty.cz/2011/pdf/2011_02_147.pdf