K Laboratories, Inc
2323 Jackson St Oshkosh, WI 54901, 920 426 2222
Fax (920) 273-6128 and E-mail akkhwaja@aol.com
Date: April 16, 2007
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SPECIFICATION OF ORDINARY PORTLAND CEMENT 42.5 or 53 GRADE EQUIVALENT TO BS
12/1996 |
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TEST
AND COMPLIANCE : |
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PERTICULARS |
UNIT |
OUR |
REQUIREMENT
OF |
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SPECIFICATIONS |
IS 12269 :
1987 |
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A. CHEMICAL REQUIREMENTS : |
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1.
Lime Saturation Factor |
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0.91 - 0.98 |
0.80 - 1.02 |
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2.
Ratio of Percentage of Alumina to |
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1.20 -1.60 |
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that of Iron Oxide |
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0.66 Min |
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3.
Insoluble Residue |
% |
1.1 Max |
3.00 Max |
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( percent by mass ) |
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4.
Magnesia ( percent by mass ) |
% |
1.0 Max |
6.00 Max |
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5.
Sulphuric Anhydride (SO3 ) |
% |
2.8 Max |
3.00 Max |
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( Percent by mass ) |
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6.
Loss On Ignition |
% |
2.5 Max |
4.00 Max |
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7.
Chloride ( Percent by mass ) |
% |
0.07 Max |
0.10 Max |
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B. PHYSICAL REQUIREMENTS : |
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1.
Fineness ( Blaine ) |
M2 / Kg |
290 Min |
225 Min |
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2.
Soundness |
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a.
Le. Chatelier Expansion |
mm |
5.0 Max |
10.00 Max |
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b.
Autoclave Expansion |
% |
0.6 Max |
00.8 Max |
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3.
Setting Time |
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a.
Initial |
Minutes |
100 Min |
30 Min |
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b.
Final |
Minutes |
280 Max |
600 Max |
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4.
Compressive Strength |
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a.
72+ 1 hours ( 3 days ) |
Mpa |
35.0 Min |
27 Min |
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b.
168 + 1 Hours ( 7 days ) |
Mpa |
47.0 Min |
37 Min |
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c.
672 + 4 hours ( 28 days ) |
Mpa |
58.0 Min |
53 Min |
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The above cement complies with the
requirement of IS 12269 : 1987 in respect of test carried |
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out |
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Quantity 8000mt/10days Total 450000mts Slag blended. Slag % must be 18 to 20%.
Quantity 8000mt/10day Total 150000mts Fly ash blend.
Please we need clinker specification as below sent .
CLINKER SPECIFICATION FOR
EXPORT
Sio2 |
21
22% |
Al2o3 |
5
5.50% |
Fe2o3 |
4
4.50% |
Cao |
65.50
66.20% |
Mgo |
1.50
% Max. |
So3 |
1.00
% Max. |
Loss on ignition |
0.75
% Max. |
Total Alkalies |
0.70
% Max. |
Insoluble Residue |
0.40
% Max. |
Free Lime |
2.00
% Max. |
LSF |
94
96 % |
C3S |
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C2S |
10
18 % |
C3A |
6 8 % |
Bulk Density |
1.30
1.45 (Gm. /Ltr) |
Moisture |
0.5
% Max. |
Size |
+
3 mm Min. 70 %
3 mm Min. 30 % |
FORMULAE:
ญญญCao
1.
LSF
=
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2 .8
Sio2 + 1.2 Al2o3 + 0.65 Fe2o3
2.
C3S
= 4.07 Cao (7.6 sio2 + 6.72 Al2o3 + 1.43 Fe2o3)
3.
C2S
= 2.87 sio2 0.754 C3S
4.
C3A
= 2.65 Al2o3
Quantity
1.40000mts
X 3 Shipment for Port of Richard Bay S Africa.
2.22500mts
X 4 Shipments to the Port of Durban
draught
available 8.8mtr at Durban.
Please
quote CNF price.