| 摘要 |
A high sulphate slag cement having a Blaine specific surface ratio of 4500 - 5500 cm2/g, consists of water-granulated blast furnace slag (in a quantity 80 - 85%) and which contains the following ingredients in the amounts indicated; CaO (40 - 50%) Al2O3 (14 - 20%) SiO2 (30 - 35%) MgO (5 -8%) The high sulphate slag cement also contains the following ingredients; CaSO4 (13 - 17%) Portland cement (1.5 - 2.5%) organic carbonic acid or its alkali metal salts (0.1 - 0.5%) water-soluble highly polymerized compounds (0.03 -0.6%) sodium sulphate (0.6 - 2%) The high sulphate slag cement is manufactured by mixing, crushing and pulverizing the ingredients noted above in the ranges indicated. |
