... C-150. 3,Weight:1250Gms/Litre Specification:Component index ConstituentsUnitValueSiO2%20.90Al2O3 %5.67Fe2O3%3.90CaO%65.10MgO%1.90SO3%0 ... , bridge, airport, high-rise buildings, large volume concrete engineering; 5. C3S content of clinker high, and the production of cement ... speed, frost resistance is strong, short construction period. 32.5/42.5/52.5R ,ASTM C-150standrad silicate Cement Clinker