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High Performance

MICRO
SILICA

✓ High Performance ✓ Pan-India Supply ✓ Test Reports Available
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≥ 85% SiO₂
High Purity Silica Content
~0.15µm
Ultra-Fine Particle Size
M100+
Concrete Grades Achievable
About the Product

WHAT IS
MICRO SILICA?

Micro Silica — also known as Silica Fume or Condensed Silica Fume — is an ultra-fine amorphous silicon dioxide (SiO₂) powder, a by-product of silicon and ferro-silicon alloy manufacturing. With a mean particle size of 0.1–0.2 µm, it is approximately 100 times finer than OPC.

Compliant with IS 15388 : 2003 and ASTM C1240, Micro Silica is the go-to additive for Ultra-High-Performance Concrete (UHPC), reactive powder concrete, and wherever extreme strength, impermeability, and chemical resistance are required.

Micro Silica
High Performance
Supplied by TSG Impex India
Why Choose This Product

KEY BENEFITS

Ultra-High Strength

Achieves M80–M120+ concrete grades by filling inter-particle voids and accelerating pozzolanic reactions.

Extreme Impermeability

Densifies microstructure to near-zero permeability — essential for aggressive chemical exposure conditions.

Chemical Resistance

Resists chloride attack, sulphate attack, acid exposure, and carbonation more effectively than any other SCM.

Enhanced Bond Strength

Improves steel-concrete interface bond, increasing pull-out and shear strength of reinforced elements.

Reduced Bleed Water

Ultra-fine particles reduce bleeding and segregation, improving fresh concrete quality.

Abrasion Resistance

Hard, dense surface layer — ideal for industrial floors, tunnel linings, and wear-resistant structures.

Technical Data

TECHNICAL
SPECIFICATIONS

Test reports and batch certificates are available on request with every consignment.

Parameter Value / Limit
Standard IS 15388 : 2003 / ASTM C1240
SiO₂ Content ≥ 85%
Mean Particle Size 0.1 – 0.2 µm
Specific Surface Area 15,000 – 25,000 m²/kg
Specific Gravity 2.20 – 2.25
Bulk Density (Undensified) 200 – 350 kg/m³
Bulk Density (Densified) 500 – 700 kg/m³
Loss on Ignition ≤ 4%
Moisture Content ≤ 3%
Chloride Content ≤ 0.1%

* Values are indicative. Actual test certificates provided with each supply.

Supply Formats
🚛
Bulk Tanker
Densified micro silica in pneumatic tankers — 15–20 MT per load for batching plants.
📦
Jumbo Bags
500–600 kg FIBC bags of densified material — easy to handle and dose.
🗃️
25 kg Bags
Multi-wall bags for laboratory, precast, and small-volume applications.
TECHNICAL DATA SHEET

Download the complete TDS including test methods and application guidelines.

Request TDS / Test Reports
Where It's Used

APPLICATIONS

🏙️

Ultra-High-Rise

M100–M120 columns for supertall buildings where OPC alone cannot deliver required strengths.

🌊

Offshore Structures

Platforms, jetties, and subsea infrastructure requiring extreme chloride and sulphate resistance.

🏭

Industrial Floors

Hardened surface layer for warehouses, chemical plants, and heavy-traffic industrial floors.

🚇

Tunnel Shotcrete

Micro silica shotcrete delivers superior early strength and adhesion for tunnel support.

⚡

Reactive Powder Concrete

Core ingredient in RPC and UHPC achieving compressive strengths of 150–200+ MPa.

🔬

Special Grouting

High-strength, low-permeability grouting for post-tensioning ducts and rock anchors.

Proven Track Record

USED IN KEY PROJECTS

Supertall Buildings
Pan-India
Offshore Platforms
West Coast
UHPC Precast Projects
Delhi NCR
Metro Tunnels & Stations
Delhi, Mumbai
Common Questions

FREQUENTLY ASKED
QUESTIONS

Micro Silica (D50 ~0.15µm) is ~20x finer than Ultra Fine Fly Ash and ~100x finer than OPC. It has far higher SiO₂ content (≥85% vs ~50% in fly ash) and delivers greater strength and impermeability gains, but at a higher cost.

Typically 5–10% by weight of cement. Beyond 10%, workability drops sharply and superplasticiser demand increases significantly. In UHPC, doses of 15–25% are used with very high SP dosages.

Yes — Micro Silica significantly increases water demand and stiffens the mix. A high-range water reducer (HRWR/PCE-based) is essential to maintain workability.

Yes — TSG Impex supplies both. Undensified (bulk density ~250 kg/m³) for slurry preparation or direct batching plant addition; Densified (bulk density ~600 kg/m³) for easier handling, bagging, and transport.

Store in sealed, moisture-proof conditions. Undensified micro silica is extremely light and dust-prone — silo storage with proper dust collection is recommended for plant use.

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QUOTE TODAY

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