High Alumina Cement:

It is produced by grinding clinkers formed by calcining bauxite and lime. The proportion of alumina varies from 35% to 45% and the ratio of alumina to lime is in between 0.85 to 1.3. It is not only rapid hardening cement but also higher ultimate strength cement. It resists an action of acids and could withstand high temperature. This cement is costlier than OPC.

The given below are the uses of high alumina cement:

(a) It is extremely useful for chemical plants and lining of furnaces.

(b) It is mainly used for structures subjected to the action of sea water, chemical and other such agents.