MANUFACTURER'S TEST CERTIFICATE (OPC}
IN ACCORDANCE WITH BRITISH STANDARD SPECIFICATION BS 4027/1996 FOR SULFATE RESISTING PORTLAND CEMENT CLASS 42.5 N
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SPECIFICATION TEST |
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Chemical parameters |
Constituents |
MAX |
MIN |
RESULTS |
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SILICON Dl-OXIDE |
Si02 % |
-- |
-- |
20.96 |
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ALUMINIUM OXIDE |
A1203 % |
-- |
-- |
4.1] |
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FERRIC OXID |
Fe203 % |
-- |
-- |
4.88 |
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CALCIUM OXIDE |
CaO % |
-- |
-- |
63.45 |
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MAGNESIUM OXIDE |
MgO % |
5.0 |
-- |
1.34 |
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POTASSIUM OXIDE |
KO % |
-- |
-- |
0.64 |
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SODIUM OXIDE |
Na;0 % |
-- |
-- |
032 |
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SULPHURIC ANHYDRIDE |
S03 % |
2.5 |
-- |
1.93 |
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CHLORIDE |
CI % |
0.1 |
-- |
0 |
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LOSS ON IGNITION |
% |
3.0 |
-- |
2.21 |
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INSOLUBLE RESIDUE |
% |
1.5 |
-- |
0.42 |
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TRI CALCIUM ALUM1NATE |
% |
3.5 |
-- |
2.64 |
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Physical Testing |
SPECIFICATION |
TEST RESULTS |
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1. FINENESS SPECIFIC SURFACE fm^ket |
-------- |
374 |
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2. SETTING TIME (minutes) (A) INITIAL SET |
60 |
Minimum |
160 |
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3. SOUNDNESS (mm) (LECHATLIER) (A) 24 HOURS EXPANSION (B) IF ABOVE TEST FAILS, EXPANSION AFTER 7 DAYS AERATION. |
10 5 |
Maximum Maximum |
1.0 --- |
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4. COMPRESSIVE STRENGTH (N/mm2) Mortar Prisms (A) 2 DAYS (B) 7 DAYS (C) 28 DAYS |
10 42.5 to 62-5 |
Minimum |
21.5 34.2 46.2 |
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