ORDINARY PORTLAND CEMENT

ORDINARY PORTLAND CEMENT GRADE 42,5N
ACCORDING TO BRITISH STANDARDS 12/1996 OR ASTM C-150
CHEMICAL COMPOSITION
SILICON DIOXIDE (SIO2) 21.00
ALUMINIUM OXIDE (A12O3) 5.30
FERRIC OXIDE (FE2O3) 3.30
CALCIUM OXIDE (CAO) 65.60
MAGNESIUM OXIDE (MGO) 1.10
SULPHUR TRIOXIDE (SO3) 2.70
LOSS OF IGNITION (LOI) 0.90
TRICALCIUM SILICATE (C3S) 60.00
DICALCIUM SILICATE (C2S) 15.00
TRICALCIUM ALUMINATE (C3A) 8.05
TRICALCIUM ALUMINO FERRICE (C4AF) 9.76
PHYSICAL AND MECHANICAL PROPERTIES
BLAIN CM2/GR 3.250
AUTOCLAVE EXPANTION 0.02
INITIAL SETTING TIME (VICAT) 105 MINUTES
FINAL SETTING TIME (VICAT) 135 MINUTES
COMPRESSIVE STRENGTH @ 03 DAYS 230 KG/CM2 AND @ 07 DAYS 305 KG/CM2 AND
@ 28 DAYS 420 KG/CM2
Compressive strength mortar Mpa (N/mm²):
Strength Class: 42,5N
Early Strength: 2 days – 10.00
28 days strength: Minimum 42,5. Maximum 62,5. Standard