China silica fume

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Silica fume
NO ITEM STANDARD
1 Silicon Dioxide(Sio2)amorphous(%) >85%
2 Moisture(%) <=1.5%
3 Loss on lgnition(LOl%) <=3%
4 Al2O3(%) 0.45%
5 Fe2O3(%) 0.5%
6 MgO(%) 1%
7 K2O 0.85%
8 C(%) 1.8%
9 Available alkalis(Na2O equibalent,%) 0.65%
10 CL(%) 0.09%
11 Water requirement ratio(%) <=115%
12 Retained on 45micron sieve(%) <=8%
13 Specific surface(m2/gram) 15-27m2/g
14 Bulk Density 200-720KG/M3
15 Pozzolanic Activity Index(%) 105%@7D
87%@28D

 
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