Difference between OPC and PPC Cement You should Know

OPC stands for Ordinary Portland Cement while PPC stands for Portland Pozzolana Cement. In this blog post, I am briefly explaining the difference between OPC and PPC cement.

So, let’s dive right in.
Difference between OPC and PPC cement

Difference between OPC and PPC Cement

The OPC and PPC cement are differentiated according to the following criteria mentioned below:

Ordinary Portland Cement (OPC)

Portland Pozzolana Cement (PPC)

  • OPC is a fine powder prepared from a mixture of limestone and clay minerals and 2 to 3 percent gypsum is added to it.
  • PPC Cement is prepared by adding Pozzolanic materials like fly ash to OPC Cement.
  • The initial strength of OPC is higher than PPC.
  • The initial strength of OPC is higher than PPC, but the strength of PPC is higher in the long run.
  • OPC generates more heat during the hydration reaction which makes it less suitable for mass concreting.
  • PPC generates less heat than OPC during the hydration reaction.
  • OPC is costlier than PPC.
  • PPC is cheaper than OPC.
  • Ordinary Portland cement is the most common type of cement in general use worldwide. OPC cement is less durable in aggressive weather than PPC cement.
  • PPC is highly resistant to sulphate attacks hence more suitable for marine construction such as the construction of dams, reservoirs, etc.
  • OPC is available in 3 grades namely OPC 33, OPC 43, and OPC 53 grade.
  • No specific grade is assigned for PPC.
  • OPC has a fineness of 225 sqm/kg.
  • PPC has a fineness of 300 sqm/kg.
  • The initial setting time of OPC should not be less than 30 minutes and the final setting time of OPC should not be more than 600 minutes.
  • The initial setting time of PPC should not be less than 30 minutes and the final setting time of PPC should not be more than 600 minutes.

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Last Words

I hope you got complete information about the difference between OPC and PPC Cement in this article.

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Leave a comment if I missed anything.

Happy Learning!!

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