In jumbo bags of 900kg/bag or 20KG/BAG, 300KG/BAG.
micro silica 1) high quality silica sand 2) factory price 3) fast delivery, prompt reply 4) stable supply
Silica Fume for Concrete/Refractory
Silica fume, also called microsilica, is a byproduct of producing 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, rather than being land filled. Microsilica consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2), its average granule diameter is 0.15~0.20 µm,specific surface area is 15000~20000 m2/kg, and it has extremely strong surface active.
Very low permeability to chloride and water intrusion.
Extremely high electrical resistivity (20 to 100 times greater than ordinary concrete).
Increased abrasion resistance on decks, floors, highways and marine structures.
Superior resistance to chemical attack from chlorides, acids, nitrates and sulfates.