1,Color:grey/white 2,Standard:British Standards BS 12/1996, or United States Standards ASTM C-150. 3,Weight:1250Gms ... low magnesium oxide, alkali content low. The grinding clinker of cement with a early high strength, mild increase quickly, ... production of cement hydration, hardening speed, frost resistance is strong, short construction period. 32.5/42.5/52.5R ,ASTM C-150standrad white cement clinker