0.15um 0.20um Micro Silica Fume High Temperature Strength SGS Standard
High Content SiO2 98%min Micro Silca Fume with SGS Standard for High Performance Concrete
1. Micro Silica Fume Introduction
Micro silica ,also called silica fume or micro silica, is a byproduct of production silicon metal or ferrosilicon alloys. Silicon metal and alloys are produced in electric furnaces.The raw materials are quartz,coal and woodchips.The smoke that results from furnace operation is collected and sold as silica fume, silica fume consists primarily of amorphous(non-crystalline) silicon dioxide(SiO2),its average granule diameter is 0.15~0.20um,specific surface area is 15000~20000m2/kg,and it has extremely strong surface active.
2. Specifications
|
Analysis |
Result |
||||
|
SF85 |
SF88 |
SF90 |
SF92 |
SF94 |
|
|
SiO2(%) |
86.11 |
88.52 |
91.53 |
93.66 |
96.97 |
|
Fe2O3(%) |
0.7 |
0.65 |
0.35 |
0.2 |
0.2 |
|
Al2O3(%) |
0.38 |
0.26 |
0.22 |
0.2 |
0.2 |
|
CaO+MgO(%) |
0.4 |
0.36 |
0.36 |
0.3 |
0.3 |
|
K2O+Na2O(%) |
0.3 |
0.28 |
0.2 |
0.2 |
0.2 |
|
Moisture(%) |
1.77 |
1.66 |
1.66 |
0.82 |
0.91 |
|
Loss on lgnition(L.O.I)@975℃ (%) |
3.6 |
2.92 |
2.07 |
1.92 |
1.91 |
3. General 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
4. Package
25kg/plastic bag, 950kg/jumbo bag,1000kg/jumbo bag.
5. Applications
The early strength of concrete or special cement compound to meet the oil Well,marine oil drilling platform,harbor terminals,railway bridges highways,airport runways,tunnels and urban high-rise building projects.
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