There are 16 different types of Cement. They are as follows:
1. Ordinary Portland Cement (OPC): The ingredients are mixed in the proportion of about two parts of calcareous materials to one part of argillaceous materials and then crushes and ground in ball mills. This mixture is burnt at about 1500-degree Celsius and cooled where gypsum is added to it and grounded again to the requisite fineness. Properties of OPC Cement:
2. Portland Pozzolana Cement (PPC): It is manufactured by grinding Portland Cement Clinker and Pozzolana (usually fly ash or burnt clay, shale which has no cementing value). Pozzolana, when combines with lime produce stable lime-pozzolana compound, has cementitious properties. The hardening of PPC consists in Hydration of Portland Cement Clinker compounds and then in the interaction of the pozzolana with Calcium Hydroxide released during Hardening of clinker. Note:
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