Manufacture of high early-strength cements from granulated blast furnace slags

摘要

Cements of high early strength increasing progressively with time comprise a high proportion of finely ground granulated blast furnace slag mixed with a small proportion of anhydrous sodium sulphate (about 4 per cent. by weight) and a small proportion of either hydrated lime (about 2 per cent. by weight) or Portland cement clinker (about 5 per cent. by weight).