CEMENT COMPOSITION HAVING REGULATED GRAIN SIZE

摘要

PURPOSE:To improve flowability and strength by adding superfine powder having low hydraulic property and gypsum to cement clinker reduced a fine powder part. CONSTITUTION:Cement clinker is crushed and reduced a fine powder part having <=15mum grain size. Superfine powder having <=5mum grain size and low hydraulic property, e.g. blast furnace slag is added to the cement clinker by <=30wt.% and gypsum is further added.