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H.K. Sonara & Co.

Micro Silica

Micro Silica

Advantages 

  • Higher compressive strength by 10-20%
  • Reduces the rate if carbonation
  • Lower permeability – Resistance to penetration of  water, chloride & other chemicals 
  • Lower free lime formation – Delays Ettringite  and  Thaumasite formation
  • Controls bleeding in fresh concrete 
  • Lower Heat of Hydration, which prevents formation of cracks

 

Properties

  • Appearance – very fine powder
  • Color – Grey 
  • Odour- Odorless
  • Mean Particle size -  25 Microns
  • SiO2 –Silica 90% Minimum
  • Humidity – 2% Maximum 

 

How  it works  :

Pozzolanic effect: It increases the performance of concrete & mortar formation. It acts physically to optimize particle packing of concrete or mortar mixture and chemically as a  high reactive pozzolan.

 

Micro filler effect :

It is an extremely fine material, with an average diameter much finer than the cement. It gets well distributed in the cementations paste, thus blocking the bleed – water channels.

 

Packaging  :

Available in 25 kg Plastic Bag or Jumbo Bag (1000 kg).

 

Quality  :

Micro Silica is a super pozzolan – a finely powdered material which when added to cementitious matter increase durability and gives higher strength. It complies with ASTM C1240.


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Specifications

Test Unit Result
Silica (SiO2) % >90
Alumina (Al203) % <0.5
Alkali (K20) % <0.3
LOI at 905 degree  Celcius % <4
Moisture % >1
Wet Sieve Analysis (Retained on 325 BSS Mesh  ) % >4
Bulk Density ( After 100 Taps) Gm/cmᶟ 500-700

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