PRODUCT QUALITY AND SPECIFICATIONS

PRODUCT QUALITY AND SPECIFICATIONS

The representative of SGS or compatible World Class Inspection organization at the port of loading shall confirm the product quality conforms to the following specification:

Ordinary Portland Cement42.5 N/R

GREY PORTLAND CEMENT CONSTRUCTION GRADE 42.5N/R, ACCORDING TO:

Portland cement BS EN 197-1- CEH1 42.5 N/R

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/mm”):

 

Strength Class:                          42,5N

Early Strength:                          2 days ˆ 10.00

Strength Class:                          42,5R

Early Strength:                          2 days ˆ

20.00 Standard 28 days strength:

Minimum 42,5. Maximum 62,

 

Note: Cement must comply with the ED Chromium (VI) Directive and the current declared Storage period-i.e. remaining below 2ppm Cr (VI) for 61 days from date of dispatch.

The specifications above might slightly vary from the above and from manufacturer to manufacturer and from country to country of production. The final specifications will be clearly mentioned in the Certificate of Quality from the manufacturer and on the SGS report at the loading port.