Ceramics-Silikáty 41, (1) 29 - 34 (1997)

Alkaline activation of slags by alkali hydroxide, carbonate or silicate is an effective way of utilizing their hydraulic activity. The present study was concerned with alkaline activation of granulated blast-furnace slags by sodium silicate (water glass with various SiO₂/Na₂O ratios) in the presence of a plasticizer (lignine sulphonate), with the effect of specific surface area of the ground slag, and with that of the concentration of additives on the rheological properties, the time of initial set and the time development of strength.