Ceramics-Silikáty 48 (1) 29-33 (2004)

EFFECT OF LIMESTONE FILLERS AND SILICA FUME POZZOLANA ON THE CHARACTERISTICS OF SULFATE RESISTANT CEMENT PASTES

E. A. El-Alfi, A. M. Radwan, S. A. El-Aleem 

Characteristics of sulfate resistant cement pastes containing limestone as well as silica fume cured up to 90 days were studied. The results show that the addition of 5 wt.% of limestone as well as silica fume to the above cement improve its mechanical properties as well as give a lower porosity at 3-90 days curing times. In addition, the free lime contents give lower values (2.4 and 0.91 wt.%) in the pastes containing 8 and 10 wt.% silica fume, respectively.

Keywords: Portland cement, Limestone, Hydration, Compressive strength