PORTLAND CEMENT CLINKER

Portland cement clinker is a dark grey nodular material made by heating ground limestone, laterite and clay at a temperature of about 1400°C. The nodules are ground up to a fine powder to produce cement.

Chemical Characteristics

Parameters Market Average Reliance Clinker
Tricalcium Silicate (C3S) % 47 – 50 > 50
Tricalcium Aluminate (C3A) % 8 – 10 9 – 11
Total Alkali:    
K2O% 0.7 – 1.1 1.0 +/- 0.1
Na2O% 0.25 – 0.4 0.25 +/- 0.05