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P.O 42.5 can be used in a variety construction projects, such as bridges, wharfs, roads, high-rise buildings, general industrial and civil buildings. It can make different grade concrete from C30 to C80.
Technical Index of 42.5 grade cement
Items/ Indexes National Standard Internal controlled indexes
Cement MgO (%) ≤ 5.0 3.8
Cement SO 3 (%) ≤ 3.5 2.3
Cement loss on ignition (%) ≤ 5.0 2.01
Cement fineness (%) ≤ 10.0 1
Setting time (min) ≥ 45 190
Final setting time ≤ 600 245
Strength(MPa) 3-day compressive strength ≥ 24.0 25.3
3-day bending strength ≥ 4.0 5.1
28-day compressive strength ≥ 42.5 47.5
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