MICRO SILICA
SILICA FUME

A Superior Solution for High-Performance Concrete and Refractory Applications

Micro silica (silica fume) is a high-performance mineral admixture consisting of ultra-fine, amorphous silicon dioxide (SiO₂), obtained as a by-product of silicon metal and ferrosilicon production.

At Mask Tradings, we supply micro silica with 95% or higher SiO₂ purity to international quality standards, providing reliable solutions to the concrete, cement, refractory, and foundry industries.

Thanks to its ultra-fine particle structure, it fills the voids between cement particles, producing denser, more durable, and longer-lasting structures.

Technical Specifications

SiO₂ Content: ≥ 95%
Structure: Amorphous Silicon Dioxide
Particle Size: Average 0.1-0.3 µm
Colour: Grey
Form: Dry Powder
Standard: ASTM C1240

Advantages of Micro Silica

Increases compressive strength
Significantly improves water impermeability
Provides high resistance to chemical attack
Protects against sulphate and chloride attack
Improves freeze-thaw resistance
Increases abrasion resistance
Extends service life
Enables the production of denser concrete with lower porosity

Cement and Concrete Industry

In cementitious applications, Micro Silica acts as a pozzolanic material, significantly improving concrete properties:

Increased Compressive Strength: Reacts with calcium hydroxide to form additional C-S-H gel, making concrete stronger and denser.
Reduced Permeability: Offers superior resistance to water and chemical ingress, making it ideal for dams, bridges, and tunnels.
Enhanced Durability: Extends service life in aggressive environments such as marine or sulfate-rich areas.
Improved Workability: Helps in producing high-performance and self-compacting concretes.

Refractory Industry

Micro Silica is a key additive in refractory castables, offering several benefits:

Improved Strength & Durability: Enhances cold and hot strength, increasing the lifespan of refractory linings.
Reduced Permeability: Finer particles fill in pores, resulting in dense, low-porosity structures.
Thermal Stability: Enhances resistance to thermal shock and slag attack.
High Temperature Performance: Suitable for linings in furnaces, ladles, and tundishes in steel, glass, and non-ferrous metal industries.

Usage Areas

1. Concrete Industry

High-Performance Concrete: Micro silica is used to produce high-strength concrete and improve its durability and longevity.
Marine Structures: It enhances the resistance of concrete to chloride penetration, making it ideal for marine environments.
Bridges and Highways: It is used to improve the mechanical properties and durability of the concrete used in bridges and highways.
Industrial Floors: Improves the abrasion resistance and reduces permeability, making it suitable for heavy-duty industrial floors.

2. Refractory and Ceramic Products

Refractory Castables: Micro silica is used to produce refractory castables with high strength and low porosity, which can withstand high temperatures.
Ceramics: It is used to enhance the mechanical properties and durability of ceramic products.

3. Oil and Gas Industry

Well Cementing: Used as an additive in oil well cementing to improve the strength and durability of the cement under high-temperature and high-pressure conditions

4. Construction Industry

Shotcrete: Micro silica is used in shotcrete to improve its bond strength, reduce rebound, and enhance durability.
Repair Mortars: It is used in repair mortars to improve their bond strength and durability.

5. Chemical Industry

Silicon Carbide Production: Micro silica is used as a raw material in the production of silicon carbide.

6. Rubber and Plastics

Filler Material: It is used as a filler material to improve the mechanical properties and durability of rubber and plastic products.

7. Environmental Applications

Waste Treatment: Micro silica is used in treating industrial effluents and solid waste to reduce heavy metal contamination and improve the stability of the treated material.

Micro Silica Dosage: How Much Is Used in Concrete?

Micro silica is typically used in concrete at 5–10% of the cement weight. In special concretes where high strength or low permeability is required, this can go up to 15%. Because micro silica has a high water demand, it should always be used together with a superplasticiser. The right dosage depends on the concrete class, cement type and application. The exact dosage should be determined by your project manager or responsible engineer.

In refractory castables, micro silica is typically used at 3–8% of the total mix. It is a key component of low-cement (LCC) and ultra-low-cement (ULCC) formulations.

Packaging and Delivery

We supply micro silica in 1.4-tonne big bags. We ship from our warehouse in Çayırova to anywhere in Turkey within a maximum of 3 working days.

What Determines the Price of Micro Silica?

Our product is densified micro silica with 95% SiO₂ content. The price depends on order quantity and whether purchases are regular. We offer special pricing for companies that buy on a regular basis.

For a current price, send us the quantity you need and your delivery location, and we will send you our quotation.

Frequently Asked Questions

Are micro silica and silica fume the same thing?

Yes. Micro silica, silica fume and microsilica are different names for the same product. It is a very fine amorphous silicon dioxide produced as a by-product of silicon metal and ferrosilicon manufacturing.

What is the difference between micro silica and fly ash?

Both are pozzolanic additives. However, micro silica particles are around 100 times finer than fly ash and have a much higher SiO₂ content. This makes its effect on strength and impermeability considerably greater.

Is your micro silica densified?

Yes. Our product is densified micro silica with 95% SiO₂ content. Densified micro silica produces less dust and is easier to transport and store, which is why it is the most widely used form in the concrete industry.

How is the product packed?

All our shipments are in 1.4-tonne big bags.

Which cities do you deliver to?

We deliver from our warehouse in Çayırova to all provinces in Turkey within a maximum of 3 working days.

Request a Quote

For your micro silica requirements, contact us on +90 533 308 0588 or at info@masktradings.com. Just tell us the quantity you need, your delivery location and the application, and we will prepare the most suitable quotation for you.

MICRO SILICA SILICA FUME