85% 88% 90% 92% 95% 97% microsilica, silica fume, Micro Silica

Physical character:

Existing form: Amorphism thin powder

Typical color: Brown (white in nature, the color is become darker with the density accretion)

B.E.T Fineness: 15-27m2/g

Density: 600-700kg/m3

Pozzolanic activity index: 85% of 28days ; 105% of 7days

Water requirement ratio: less than 125%

Ratained on 45 micron sieve: less than 8%

Moisture: less than 3%

Loss on Ignition: less than 3%

Chemical component:

SiO2 ≥85(85%-97%)   ;   CI ≤0.02   ;   MgO ≤2.0   ;   Fe2O3 ≤0.9

Al2O3 ≤0.8   ;   CaO ≤2.0   ;   K2O ≤2.0 

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