Ordinary Portland Cement

This is manufactured to comply with BS 12-EN 196 1996-(42.5 R Class) and equivalent to ASTM. The test results conducted exceed the permitted required strength.

Technical Specification:

 

Chemical Composition

 

Description

Requirement

Typical Test Results

Silicon Dioxide (SiO2)

 

20.07%

Aluminum Oxide (Al2O3)

 

4.47%

Ferric Oxide (Fe2O3)

 

2.92%

Calcium Oxide (CaO)

 

63.89%

Magnesium Oxide (MgO)

5.00* Max.

3.03%

Sulphur Trioxide (SO3)

3.50 Max.

2.91%

Alkalies ( Na2O + 0.658 K2O )

 

0.68%

Loss on Ignition  (LOI)

3.00 Max.

1.00%

Insoluble Residue (IR)

1.50 Max.

0.68%

Tricalcium Silicate (C3S)

66.70* Min.

72.24%

Dicalcium Silicate (C2S)

Tricalcium Aluminate (C3A)

 

6.91%

Tetra Calcium Aluminoferrite (C4AF)

 

8.88%

CaO/SiO2

2.0*

3.18%

Chloride (CI)

0.10 Max.

0.042%

 

Physical Properties

 

Description

Requirement

Typical Test Results

Fineness, (Blaine Air Permiability)

 

3300 cm2/gm

Soundness (Le Chatelier Expansion)

10.00 Max.

0.50 mm

Compressive Strength

 

 

After 2 days ( N/mm2)

20.00 Min.

23.50 N/mm2

After 28 days ( N/mm2)

42.50** Min.

49.00 N/mm2

Initial setting time (Vicat Test)

60.00 Min.

180.0 minute

 

*Applies to clinker , ** And not exceeding 62.2

 

Applications: Suitable for all type of general cement applications including reinforced concrete, plastering, others building products like blocks, bricks , cladding, pavements.

Packing: Available in standard packing of 50 KG in paper bag, palletized or unpalletized, Jumbo bags or in tankers as per requirement of users.