Difference between OPC and PPC




Sr. No.
OPC
PPC
1
SanghiOPC is produced by grinding limestone and secondary materials to fine powder.
SanghiPPC is produced by adding pozzolanic materials to OPC. Pozzolanic materials which includecalcined clay, volcanic ash, fly ash and silica fumes.
2
Initial strength is higher in OPC compared to PPC.
In PPC strength is higher than OPC in longer period by proper curing.
3
OPC is more permeable than PPC.
PPC Is less permeable than OPC.
4
OPC has high heat of hydration.
PPC has lower heat of hydration than OPC.
5
OPC is available in three grades. OPC 33, OPC43, OPC53.
There are no grade in PPC.
6
Curing time is less compared to PPC.
It takes more curing time than OPC.
7
Fly ash can be mixed during design mix to reduce cost of concrete.
Fly ash cannot be added further.
8
It is not suitable for aggressive weather.
It is suitable for aggressive weather.
9
It emits CO2 during manufacturing process.
It constitutes industrial and natural waste which makes it eco-friendly.
10
It has low Setting time compared to PPC.
It has high setting time compared to OPC.
11
OPC has lower workability compared to PPC.
PPC has higher workability compared to OPC.
12
It is costlier than PPC.
PPC is cheaper than OPC.
13
It has lower resistance against alkalis, sulphates, chlorides etc.
It has higher resistance against alkalis, sulphates, chlorides etc.

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Blog written by

Shruti Doshi
Technical Officer – Sanghi Cement & Blogger
shruti.doshi@sanghicement.com
shrutidoshi.1492@gmail.com

Blog Managed by

Nirav Pandya
Digital Marketing Officer – Sanghi Cement
nirav.pandya@sanghicement.com


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