Microsilica ,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.
1).Appearance is as grey&white off.
2).High electrical resistivity
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
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.
1).to improve the performance of concrete or cement
2).prepared with ultra-high
4).resistant to erosion
1.1000KG Jumbo bag packing
2.20/25KG small bag packing
3.Other customerized packing.
Inspection Standard and Methods :
Quanzhou Winitoor Industries Co.,Ltd has been in microsilica/silica fume/micro silica since 2004 and exports thousand tons of microsilica/silica fume/micro silica to gulf countries including Qatar,
UAE,Bahrain,Oman,Korea,Japan,Canada,Vietnam,Colombia and so on.
There are mainly two kinds of microsilica/silica fume/micro silica,densified and undensified.