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Ordinary Portland Cement

Ordinary Portland Cement is produced by pulverizing clinker consisting essentially of hydraulic calcium silicate and containing one or more forms of calcium sulphate as an inter ground addition.

Assured Compliance With

European Standard OPC EN 197-1 CEM I 42.5 R
Pakistani Standard PS 232/1983(R)


Typical Analysis and Physical Properties

The listed tests below are typical and for information only. Analytical details of the product should be sought in writing from the Pakistan Cement Company.

Chemical Analysis

Typical Results

Standard Requirement
EN 197-1 BS 12-1996

Loss on Ignition %
2.0
5.0% Max
Insoluble residue %
0.5
1.5% Max
Sulphate as SO3 %
2.5
3.5% Max
Chloride %
0.05
0.1% Max
Alkali Equivalent %
0.57
0.60% Max


Physical Properties

Fineness
Sieve Residue Over 45µm%
9-11
Fineness by Blaine cm2/g
3200-3300

 

Setting Behavior

 
Typical Results

Standard Requirement
EN 197-1 BS 12-1996

Standard Consistency %
27.5
Initial Setting Time (minutes)
150
60Min.
Final Setting Time (hours)
4:30
10h

 

Compressive Strength Performance Mortar EN 196-1 Testing Method

 

Typical Results

Standard Requirement
EN 197-1 BS 12-1996

Early strength – 2days (N/mm2)

22.5

20.0Min. for 42.5 R

Standard Strength – 28days (N/mm2)

50.0

42.5Min. and 62.5 Max for 42.5 R


Application

The product has been designed to give enhance concrete properties in the fresh “wet” state with adequate high early strength levels upon setting and hardening.