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	BIS Specifications and SDCC norms of 43 GRADE OPC
	BIS Specifications and SDCC norms of 53 GRADE OPC
	Portland cement construction grade 42.5 n/r OPC
	Portland PC – CP CEM 1- 52.5 Cement

Portland cement construction grade 42.5 n/r opc
ACCORDING TO BRITISH STANDARTS 12-1996 OR ASTM C150-05 TYPE I-II
CHEMICAL COMPOSITION
Loss of Ignition (LOI)	0.90
Silicon Dioxide (S102)	21.0
Tricalcium Silicate (C3S)	60.0
Aluminum Oxide ( A 1203)	5.30
Dicalcium Silicate (C2S)	15.00
Ferric Oxide (FE103)	3.30
Tricalcium Alumino Ferrice (C4AF)	9.76
Magnesium Oxide (MGO)	1.10
Tricalcium Aluminate (C3A)	8.05
Calcium Oxide (CAO)	65.60
Sulphur Trioxide (SO3)	2.70
PHYSICAL AND MECHANICAL PROPERTIES
Final setting time (VICAT) 135 minutes Blain CM2/GR 3.250
Initial setting time (VICAT) 105 minutes Autoclave Expansion 0.02
Compressive Strength: @ 03 days, 230 KG/CM; @ 07 days, 305 K; @ 28 days, 420 KG/CM
Compressive strength mortar Mpa (N/mm 2); @ 28 days; 42.5= 42.5 min.; 52.5= 52.5min