Micro Silica (Silica Fume)
Ultra-fine pozzolan, 85–98% SiO₂, for high-performance and shotcrete applications.
Product overview
Micro silica, also known as silica fume, is an ultra-fine by-product of silicon or ferrosilicon alloy production in electric arc furnaces. It is widely used as a supplementary cementitious material in the construction industry to enhance the performance of concrete and other materials.
Applications
High-Performance Concrete
- Improves compressive strength, durability and resistance to chemical attack
Shotcrete
- Enhances adhesion, reduces rebound and increases impermeability
Marine & Infrastructure
- Ideal for structures exposed to chlorides, sulfates and aggressive environments
Refractory & Ceramics
- Used to produce heat-resistant materials due to high SiO₂ content
Sealants & Adhesives
- Provides increased bonding strength and reduced shrinkage
Oil & Gas Industry
- Used in well cementing to reduce permeability and improve resistance to harsh conditions
Advantages
- Improves compressive and flexural strength of concrete
- Reduces permeability against chloride ions and chemical attack
- Minimises cracking from thermal or drying shrinkage
- Acts as a filler, reducing voids in the concrete matrix
- Utilises industrial by-products, reducing waste
Export & logistics
Micro Silica (Silica Fume) is loaded from Mundra and Pipavav ports in Gujarat, where Navdeep Tradex holds strategic warehouse capacity, in container or bulk shipments to buyers across the Gulf, Africa and Asia. View export markets.
Specifications
| Property | Value |
|---|---|
| Product code | CRM-05 |
| Category | Construction Raw Materials |
| Standard / grade | 85–98% SiO₂ · highly pozzolanic |
| Supply form | Ultra-fine pozzolan, 85–98% SiO₂, for high-performance and shotcrete applications. |
| Property | Value |
|---|---|
| Appearance | Gray to off-white fine powder |
| Particle Size | 0.1 – 0.5 microns |
| Specific Surface Area | 15,000 – 30,000 m²/kg |
| Specific Gravity | 2.2 – 2.3 g/cm³ |
| Bulk Density | 200 – 700 kg/m³ |
| Property | Value |
|---|---|
| Silicon Dioxide (SiO₂) | 85 – 98 |
| Other oxides (Al₂O₃, Fe₂O₃, MgO, CaO) | Trace |
Values are typical ranges. Batch-specific certificates of analysis are issued with every consignment.
Packaging, storage & safety
Packaging
- Bulk, FIBC and bagged formats — confirmed at quotation
Storage
- Store in dry, covered conditions
Safety & handling
- Use appropriate PPE; refer to the MSDS
Documents
Documents are issued on request so that you receive the revision that matches your grade and consignment.
Frequently asked
What documentation ships with an order of Micro Silica (Silica Fume)?
Every consignment is despatched with a Technical Data Sheet, a Material Safety Data Sheet and a batch certificate of analysis. Third-party testing certificates are available on request.
Which standards does this product meet?
85–98% SiO₂ · highly pozzolanic. Confirm the governing standard for your market at RFQ stage and it will be stated on the quotation.
What packaging options are available?
Bulk, FIBC and bagged formats are available; the exact configuration is confirmed at quotation.
Can samples be sent before an order is placed?
Yes. Samples are despatched from Gujarat for evaluation — state the grade, quantity and destination address in your enquiry.
Which ports do you load from?
Consignments load from Mundra and Pipavav ports in Gujarat, where we hold strategic warehouse capacity. Container and bulk shipments are both handled.
Quote Micro Silica (Silica Fume) to your port.
Include grade, quantity, packaging and destination port. Quotations are returned with applicable standards and lead time.