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CEMENT

We have a mandate with a cement company and can supply cement in bulk quantity.
The cement available with us is of the following specifications and properties:

SPECIFICATIONS AND CHEMICAL COMPOSITION OF PORTLAND CEMENT 42.5N

CHEMICAL
ANALYSIS

UNIT

CONTROL
RANGE

TYPICAL

 

 

 

 

SILICON DIOXIDE (SiO2)

%

20.8 – 23

21

ALUMINIUM AXIDE (Al2O3)

%

4.5 – 6.0

5.30

FERRIC OXIDE (Fe2O3)

%

3.1 – 6.0

3.30

CALCIUM OXIDE (Cao)

%

64 - 68

65.60

MAGNESIUM OXIDE (Mgo)

%

1.0 – 5.0

1.10

SULPHUR TRIOXIDE (SO3)

%

2.7 – 3.0

2.70

LOS OF IGNITION (Loi)

%

1.0 – 3.0

1.90

INSOLUBLE RESIDUE

%

0.1 – 0.7

0.4

TRICALCIUM SILICATE (C3S)

%

50.0 – 64.4

60

DICALCIUM SILICATE (C2S)

%

14.2 – 18.2

15

TRICALCIUM ALUMINATE ( C3A)

%

6.0 – 9.5

8.05

TRIC. ALUMINO FERRICE (C4Af)

%

10.5 – 12.0

9.76

CHROMIUS ES. (CR6) AT LEST FOR A 6 MONTHS PERIOD

 

 

<2ppm

 Physical And Mechanical Properties:


BLAIN CM2/GR

 

3.25

 

 

 

AUTOCLAVE EXPANSION

 

002

NORMAL CONSISTENCY

%

27.5

INITIAL SETTING TIME

Hours Mins

3:25 – 4:50

FINAL SETTING TIME

Hours Mins

4:54 – 6:00

FINTES INDEX

(CM2/GM)

2800 - 3040

COMPRENSIVE STRENGTH ISO/EN 19/200

BS 4550 MORTAR

@ 03 DAYS

KG/CM2

26.5 – 34.2

@ 07 DAYS

KG/CM2

37.3 – 42.5

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