Original title: Pojivo na bázi semletého slínku portlandského cementu Pojivo na bázi semletého slínku portlandského cementu
Title in English: Mixture on the bases ground Portland cement clinker
First author: Assoc. Prof. Frantiřek Škvára, MSc, DSc
Short abstract:
Cement based on ground clinker of Portland cement (without gypsum) with specific surface 450-700 m 2/kg, containing ligninsulfonate, sulphonated lignin (pH of lignosulphonate solution hasvalue greater 7.5-8) and salt of alkali carbonate and /or blast furnace slag, fly ash, silica fume,activated clay. This cement has very high initial and final strength, low prosity and superior resis-tance agaist agressive medium (salt).