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GREY CEMENT KOHAT ORDINARY PORTLAND CEMENT is manufactured under strict quality control on state of the art plant with latest technology.
Our Cements comply with following standards:
1. PS 232-1983 (R) 2. ENV 197- 1 & 2 CEM I, CLASS 42.5 N
Available in 50 Kg paper or polypropylene bags (20 bags to a metric ton). Bulk cement can be delivered in N.W.F.P areas. |
Specifications Grey Cement:
|
Test Physical/Chemical |
Pakistan Standards PS 232-1983 (R) |
EN 197- I & 2
(Formerly |
Kohat Ordinary Portland Cement |
|
Physical Tests |
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Fineness Sqcm/gm |
2,250 (Minimum) |
|
2700 - 2900 |
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Soundness (mm) |
10 (Maximum) |
10 (Maximum) |
1 - 2 |
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Setting time (Minutes) |
150-200 |
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Initial |
45 (Minimum) |
60 |
110 - 115 |
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Final |
600 (Maximum) |
- |
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Compressive Strength PSI (Mpa) |
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2 Days |
- |
≥1450(10) |
2600 ≥ 18 |
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3 Days |
2,200(15.0) (Minimum) |
- |
3,625 ≥ 25 |
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7 Days |
3.400(23.5) (Minimum) |
- |
4,350 ≥ 30 |
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28 Days |
5000(34.5) |
≥6160 (42.5) |
6,525 ≥ 45 |
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Chemical Tests |
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Lime Saturation Factor (LSF) |
0.66 - 1.02 |
- |
0.90 - 0.93 |
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Magnesium Oxide (MgO) % |
4.0 (Maximum) |
- |
1.0 - 1.4 |
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Sulphuric anhydride (SO3) % |
3.0 (Maximum) |
≤3.5 |
2.5 - 2.8 |
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Insoluble residue |
1.5 (Maximum) |
≤5.0 |
0.2 - 0.3 |
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Loss on ignition |
3.0 (Maximum) |
≤5.0 |
1.5 - 2.0 |
