Micro-Silica (Silica Fume)
High-purity silica fume for high-performance concrete and refractory applications.
Applications
Micro-silica acts as a pozzolanic admixture in high-performance and high-durability concrete, raising compressive and flexural strength while cutting permeability. It reinforces refractory castables, ceramics, and oil-well cement slurries subjected to thermal and chemical stress. Further uses include protective coatings, fireproofing, and polymer composite fillers.
Grades / Types
Key facts
Specifications
| SiO₂ Content | ≥ 90% (min) |
|---|---|
| Standard | ASTM C1240 / EN 13263 |
| Mean Particle Size | < 1 μm (avg. 0.15 μm) |
| Specific Surface Area (BET) | 15–30 m²/g |
| Loss on Ignition (LOI) | ≤ 4% |
| Bulk Density (Densified) | 500–700 kg/m³ |
| Moisture Content | ≤ 1% |
Packing & supply
25 kg valve bags and 1 MT jumbo (FIBC) bags; densified product also supplied in bulk. Custom packaging available on request.
Loading ports & markets
Documentation & compliance
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