Inspection of cement
Variety of cement Ordinary Portland cement
Grade of cement 42.5, 52.5,
Ordinary Portland cement
Magnesium oxide (MgO) less than % 5.0 5.0
Sulphur trioxide (SO3) less than % 3.5 3.5
Loss of ignition (LOI) less than % 5.0 5.0
Fineness less than % 10.0 10.0
Soundness qualify qualify
Initial setting time more than Min 45 45
Final setting time less than Min 600 600
Bend strength 3 day more than Mpa 3.5 4.0
Bend strength 28 days more than Mpa 6.5 7.0
Compressive strength 3 days more than Mpa 16.0 22.0
Compressive strength 28 days more than mpa 42.5 52.5
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