Clinker (cement)

  In the manufacture of Portland cement, clinker is the solid material produced by the cement kiln stage that has sintered into lumps or nodules, typically of diameter 3-25 mm.

Additional recommended knowledge

Essential Laboratory Skills Guide

Correct Test Weight Handling Guide: 12 Practical Tips

Daily Visual Balance Check

the size of a ball

Uses

Clinker is ground (usually with the addition of a little calcium sulfate) to become Portland cement. It may also to be interground with other active ingredients to produce:

• blastfurnace slag cement
• pozzolanic cement
• silica fume cement

Clinker, if stored in dry conditions, can be kept for several months without appreciable loss of quality. Because of this, and because it can easily be handled by ordinary mineral handling equipment, clinker is traded internationally in large quantities. The freight cost is much lower than that for the equivalent amount of finished cement. Cement manufacturers purchasing clinker grind it as an addition to their own clinker at their cement plants. Manufacturers also ship clinker to grinding plants in areas where cement-making raw materials are not available.

See cement.

this is the best cement to use on a house more than 30 story building

Notes