STUDY ON THE EASILY GRINDING PORTLAND CEMENT CLINKER

The mineral composition, grinding characteristic and the physical properties of the easily grinding portland cement clinker were studied. This kind of material can be clinkered at the temperature ≤1400℃. Its mineral composition is similar to that of the ordinary portland cement clinker, but it is characterized by high C 3S content, more than 70% (in mass) of C 3S contained based on the whole mineral composition. In the same test conditions to obtain 320 m 2/kg of the specific surface area, the easily grinding portland cement clinker takes for 4.5 min whereas the ordinary portland cement clinker takes for 8 min. In compressive strength test the easily grinding portland cement clinker gets 37 MPa and 60 MPa for 3 d and 28 d tested respectively.