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CHROME ORE GYPSUM LIME STONE MICRO SILICA MANGANESE ORE   
  
  

 









  
 
Silica fume is also called Micro silica ,silica dust ,which is widely used in concrete’s field and refractory’s field, ceramic and rubber applications.
Silica fume consists primarily of amorphous (non-crystalline) Silicon Dioxide.
House Of Natural Minerals trade micro silica whose individual particles are extremely small, approximately 1/100th the size of an average cement particle. Because of its chemical & physical properties, like high silica content & extreme fineness, micro silica is a very effective pozzolanic material.
Micro Silica Specification As per ASTM C 1240 Concrete containing silica can have very high strength and can be very durable. Addition of micro silica fume also reduces the permeability of concrete to chloride ions, which protects thereinforcing steel of concrete from corrosion, especially in chloride-rich environments such as coastal regions and those of humid continental roadways and runways (because of the use of deicing salts) and saltwater bridges.
                    
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SiO2

90(min)

K2O

<1%

Na2O

<1%

Fe2O3

<1%

Al2O3

<2%

Ph Value

Max.7.5%

Loss on Ignition at 750 Degree Centigrade

3.89%

H2O (when bagged)

2.46%

Coarse Particles:>45 microns

09%

Coarse Particles:<45 microns

91%

Specific Surface Area(B.E.T)

>16m2/gm

Bulk Density(Kg/m3)

565.75

Pozzolanic Activity Index(7 Days)

Min.105%

Pozzolanic Activity Index(28 Days)

Min.117%





















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