Skip to main content

Define clinker in brief

Short answer

Clinker is the nodular, dark grey product (5-25 mm) formed by burning limestone and clay at 1400-1500°C, consisting mainly of C3S, C2S, C3A, and C4AF. It is ground with 3-5% gypsum to produce cement.

Define clinker.

Clinker is the hard, dark grey, nodular (5-25 mm) material obtained by burning a finely ground mixture of limestone and clay at about 1400-1500 C in a rotary kiln, until partial fusion occurs. It consists mainly of the four compounds C3S (tricalcium silicate), C2S (dicalcium silicate), C3A (tricalcium aluminate) and C4AF (tetracalcium aluminoferrite). Cement is obtained by grinding clinker with 3-5% gypsum.

✓ Answer checked by Claude Opus 5.5 (high effort)

All Civil Engineering Materials chapter 5 questions →