01
Dams & Water-Retaining
Massive pours stay crack-free with up to 30% less heat of hydration, while low permeability keeps water out.
SiO₂
>90%
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Amorphous silica fume · Super-pozzolanMicro-silica, engineered for durable concrete.
An ultra-fine, amorphous form of silica — over 90% SiO₂ and finer than 25 microns — that works both physically and chemically to make concrete denser, stronger and longer-lasting.
01 What it is
Micro-silica, also known as silica fume.
Each particle is roughly 100 times finer than a grain of cement. That extreme fineness, combined with a high amorphous silica content, lets Silpozz work two ways at once: physically packing the spaces cement cannot reach, and chemically reacting within the mix to build extra strength.
The outcome is concrete with a refined pore structure, dramatically lower permeability, and the durability that heavy infrastructure demands.
Particle
<25 µm
Colour
Grey
pH
8.0
Silpozz micro-silica powder
02 How it works
Three actions, one stronger structure.
Silpozz improves concrete through a sequence of physical and chemical effects as the mix cures.
Step 01
Fill
Sub-25-micron particles slot into the microscopic voids between cement particles — the gaps that would otherwise become capillary channels for water and chemicals.
Step 02
React
The amorphous silica reacts with free calcium hydroxide left from cement hydration, converting a weak by-product into strong calcium-silicate-hydrate binding gel.
Step 03
Densify
The combined effect is a tighter, lower-porosity matrix — higher compressive strength, far lower permeability, and a structure sealed against corrosive ingress.
03 In the mix
The smallest ingredient, the biggest difference.
Admixtures make up under 1% of a concrete mix by volume — yet they govern its durability. Silpozz is the admixture that decides how long a structure lasts.
- Coarse aggregates41%
- Fine aggregates26%
- Water14%
- Cement15%
- Entrained air1%
- Admixtures — incl. Silpozz3%
04 Technical specifications
Ultra-fine grey powder
Consistent, verified, ready to specify.
Silpozz is supplied as a fine grey amorphous powder with consistent, batch-controlled properties suited to high-performance and refractory concrete.
Ultra-fine grey powder
SiO₂ — Silica
> 90%
Particle size
< 25 microns
Humidity
< 2%
Colour
Grey
Loss on ignition (800 °C)
< 4%
pH value
8.0
Values are typical. Project-specific data sheets available on request.
05 Applications
Where Silpozz performs.
Wherever concrete faces extreme load, aggressive chemistry, or corrosive water, a denser matrix performs harder and lasts longer.
02
Bridges & Flyovers
Decks and piers gain strength and resist the chloride and freeze-thaw attack that ages structures.
03
High-Rise & Industrial
High-strength columns, cores and abrasion-resistant floors for heavy structural loads.
04
Tunnels & Underground
Low-permeability linings hold back groundwater and resist sulphate and chemical attack.
05
Marine & Chemical Tanks
Halves chloride ingress to protect reinforcement, and resists acids in containment structures.
06
UHPC & Refractory
The dense, fine-particle backbone of ultra-high-performance and heat-resistant concrete.
Exported worldwide
06 Direct from the manufacturer
Made at source. Shipped where you build.
Silpozz is manufactured in India and supplied nationwide as well as exported worldwide. Buying direct from the manufacturer means consistent quality, shorter lead times and no import mark-up — the same engineered performance as expensive imported silica fume, without the middleman.
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