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What are the grades of PPC?

The gradation of cement is basically due to the difference in potential phase composition of clinker such as C2S, C3S, etc. In view of this, the addition of Pozzolana to cement manufactured will not hold good for any cement gradation for PPC.

As such, BIS does not stipulate any grades for PPC . Many engineers feel that this restricts them from economizing the use of PPC