STANDARD COMPARISON TABLE FOR ORDINARY PORTLAND CEMENT (OPC)
[Table 2]
L.O.I.
%
<3
<5
<5.0
<4.0
<3.0
<1.5
I.R.
%
<1.5
<3
<5.0
<1.5
<0.75
<0.75
MgO %
<4
<5
.....
<5.0
<5.0
<3.5
SO3 %
<2.5
<3.5
<3.5
<3.5
<3.0
<2.5
Cl- %
.....
.....
<0.1
<0.1
.....
.....
FINENESS(BLAIN)
CM2/g
>2250
>2200
.....
>2800
>2800
>2850
AUTOCLAVE EXPANSION %
.....
.....
.....
.....
<0.80
<0.8
LE CHATELIER EXPANSION mm
<10
<10
<10.0
<10.0
.....
<5.0
INITIAL SETTING TIME
min.
>45
>60
>60
>60
>45
>60
FINAL SETTING TIME
hr.
<10
<12
<10.0
<10.0
<6.0
<6.0
COMPRESSIVE STRENGTH
2 Days
N/mm2
5
.....
.....
.....
>10.0
.....
.....
3
DAYS N/mm2
5
>23
.....
.....
.....
>9.81
>14.0
7
DAYS N/mm2
5
.....
>18
>16.0
>21.0
>17.17
>22.0
28 DAYS N/mm2
5
>41
>35
>32.5
>32.5
>30.90
>34.0
1) IRANIAN
STANDARD.
2) EUROPEAN
STANDARD.
3) TURKISH
STANDARD.
4) SPECIFICTION OF THE PRODUCTS OF SOUFIAN CEMENT COMPANY.
5) TESTS ARE BEING CARRIED OUT ACCORDING TO EN 196 PART 1;
METHODS OF TESTING CEMENT; DETERMINATION OF STRENGTH.
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