Wednesday, 10 April 2019

Some important specifications -OPC

Some important specifications -OPC

Fineness (cm2  / gm )
2250 (minimum)
Setting time

Initial
30 hours of duration
Final
10 hours maximum
Specific gravity
3.1
Compressive strength ( Kg / cm2)
230 minimum
3 days
330 minimum
7 days
28 days
430 minimum



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