Microsilica 85% 20F and 40F

Microsilica 20F and 40F 1.Silica fume 85%-95% 2.Good fluidity 3.Low permeability 4.Meets the requirements of ASTM C-1240

Microsilica 85%  20F and 40F

1. Instruction

Microsilica , also called silica fume or micro silica, 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. Silica fume 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.Microsilica can be used in a variety of cementation products, such as concrete, grouts, and mortars as well as elastomeric, polymer, refractory, ceramic and rubber applications.HS No.: 28112200 China Origin, microsilica meets the requirements of ASTM C-1240.Microsilica CAS #: 69012-64-2

2. Main function

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.

3. Specification of Microsilica JH85

Parameters	Standard Value
Silicon Dioxide(SiO2)	min 85 %
Loss on Ignition(L.O.I) @ 975°C	max 4 %
Moisture Content	max 3 %
Percent Retained On 45μm (325 sieve)	max 2 %
Bulk Density	250-300kg/m3 and 500-700kg/m3

Microsilica 85% 20F and 40F