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Brief 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 wood chips. 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.
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
Application area
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.
Silica fume used in the construction
Silica fume used in the high-speed railway RPC cover plate
Packing:20MT / 20GP
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MS.Angelina
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