CEMENT 42.5

Quantity Order:

Payment Method:

L/C

Quantity:

4 800 000 MT

Portland cement grade 42.5 BS 12/1996 &/or ASTM C-150
SPECIFICATIONS:
GREY PORTLAND CEMENT FOR CONSTRUCTION GRADE 42.5R ACCORDING TO BRITISH STANDARDS 12/1996 OR ASTM C-150
For construction grey portland cement grade
42,5 N Acc UK standart 12/1996 or astm c-150
CHEMICAL COMPOSITION
TRICALCIUM ALUMINO FERRICE (C4AF) 9.7
SULPHUR TRIOXIDE (SO3) 2.70
MAGNESIUM OXIDE (MGO) 1.40
SILICON DIOXIDE (SIO2) 21.00
ALUMINIUM OXIDE (A12O3) 5.50
CALCIUM OXIDE (CAO) 65.60
LOSS OF IGNITION (LOI) 1.40
FERRIC OXIDE (FE2O3) 3.30
TRICALCIUM SILICATE (C3S) 60.00
DICALCIUM SILICATE (C2S) 15.00
TRICALCIUM ALUMINATE (C3A) 8.05
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
@ 07 DAYS 305 KG/CM2
@ 28 DAYS 420 KG/CM2
Silicon Dioxide 20,5% 20,0% minimum
Aluminium Oxide(Al2O3 4,3% 6,0% maximum
Iron oxide(Fe3O2) 3,8% 6,0% maximum
Calcium Oxide( CaO) 62,2%
Magnesium Oxide( MgO) 1,6% 6,0% maximum
Sulfur trioxide(SO3) 2,7% ASTM
C 563 optimum 3,0% maximum
Loss On Ignition 1,2% 3,0% maximum
Insoluble Residue 0,20% 0,75% maximum
Alkalies as Na2O 0,45% 2100
3 days 3980 ( 27,4) >3500 12,0 MPa minimum
7days 4950 (34,1) >4750 19,0 MPa minimum
28days 6370 (43,9) >6300
Flow 111 >105
False Set 87 >

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