ORDINARY PORTLAND CEMENT 42.5

Chemical Composition

SILICON DIOXIDE (SIO2)20.08 - 21.00

ALUMINIUM OXIDE (A12O3) 5.30 FERRIC OXIDE (FE2O3) 3.25 – 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

NORMAL CONSISTENCY % 27.5

INITIAL SETTING TIME (VICAT) 105 – 135

MINUTES @ 03 DAYS 230 KG/CM2 @ 07 DAYS 305 KG/CM2

COMPRESSIVE STRENGTH @ 28 DAYS 420 KG/CM2