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Silica Fume Features Characteristics
1) Appearance is as grey&white off.
2) High electrical resistivity
3) Low Permeability
4) Superior resistance to chemical attack from chlorides,acids and sulfates
5) Low chloride ion diffusion
6) High reactive Pozzolan
7) High temperature strength
8) Improved stability ingeothermal environment
Analysis Result
Test Item | Standard | Result | Standard | Result | Standard | Result | Standard | Result |
SF85 | SF90 | SF94 | SF96 | |||||
SiO2 (%) | 85% min | 87.94% | 90% min | 92.05% | 94% min | 95.46% | 90% min | 97.68% |
Fe2O3 (%) | 2.0% max | 0.47% | 2.0% max | 0.57% | 2.0% max | 0.04% | 2.0% max | 0.02% |
Al2O3 (%) | 2.0% max | 0.42% | 2.0% max | 0.51% | 2.0% max | 0.27% | 2.0% max | 0.18% |
CaO (%) | 2.0% max | 0.51% | 2.0% max | 0.64% | 2.0% max | 0.11% | 2.0% max | 0.05% |
Na2O (%) | 2.0% max | 0.63% | 2.0% max | 0.58% | 2.0% max | 0.41% | 2.0% max | 0.10% |
Moisture (%) | 2.0% max | 0.50% | 2.0% max | 0.74% | 2.0% max | 0.34% | 2.0% max | 0.38% |
Loss On Ignition (%) | 3.0%max | 1.47% | 3.0%max | 2.43% | 3.0%max | 1.42% | 3.0%max | 1.01% |
Bulk Density ( Densified ) | 550-700kg/m3 | 650 kg/m3 | 550-700kg/m3 | 650 kg/m3 | 550-700kg/m3 | 650 kg/m3 | 550-700kg/m3 | 650 kg/m3 |
Bulk Density (Unidensified) | 300-380kg/m3 | 330 kg/m3 | 300-380kg/m3 | 330 kg/m3 | 300-380 kg/m3 | 330 kg/m3 | 300-380 kg/m3 | 330 kg/m3 |
90% Min Micro silica fume for cement /concrete