The micro silica is as a raw material, commonly used in the preparation for high performance concrete.  

   Microsilica or Silica fume

 

      Microsilica has historically been considered a waste product. However, from the mid of 1970s,microsilica has discovered as a new-style special materials, which can be used in a variety of productive ways. Microsilica increases the compression and abrasion resistance of high-performance concrete and high compactness make concrete against the attack from other chemical elements. In the refractory industry, microsilica increases high temperature strength and thermal conductivity in castables.

ROPERTIES&SPECIFICATIONS

 

PROPERTIES
State	Non-amorphous Ultrafine (non-crystalline) poweder
Color	Grey to medium grey powder
Bulk density-Densified	500-700KG/M3
Bulk density-Undensified	200-350KG/M3
SPECIFICATIONS
SiO2(Silicon Dioxide)	Min.95%
H2O	Max.1.0%
Loss on ignition	Max.3%
Fe2O3	Max.0.5%
Al2O3	Max 0.45%
CaO	Max.0.70%
MgO	Max.0.5%
K2O	Max 0.85%
Retained on 45micron sieve	Max.6.0%
Pozzolanic Activity Index	105@7d

 

Packaging:Packaging:UV 500kgs/bag or UV 25kgs/bag with Pallet

Micro silica in Concrete

1. Making high-grade concrete effectively enhances the strength  and pumpability of strong concrete. 2. Making high crack-resistance, self-waterproofing concrete, be used in the subway, tunnel and basement of high-rise structures.3. Used in maritime works and chemical industry. Owing to the compactability, it can prevent effectively sulphate and chlorine ion from osmosizing and eroding Avoid the steel corroding in armoured concrete (RC), lengthen the life-span of concrete.4. Used in the construction item under water, such as pier, huge dam and drilling platform.5. Used in road surface concrete of expressway and large-scale bridge.

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Factorys.

 

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Silica fume for concrete 95%