BK97 micro silica powder for high performance concrete is an ultra-high-purity (SiO₂ ≥97%) pozzolanic powder with minimal impurities and very high activity. Designed for UHPC, it delivers outstanding densification, compressive strength and durability and is also used in premium concrete and special composite systems.
Technical Specifications
| Product model | BK97 |
|---|---|
| SiO₂ | ≥ 97.0% |
| Loss on ignition | 0.5% |
| Moisture | ≤ 1.5% |
| Water demand | 112% |
| Specific surface area | 18,000 m²/kg |
| Activity index | 128% |
| Bulk density | 350–450 kg/m³ |
| Standard | GB/T 27690-2023 |
| pH value | 6.9 |
| Packing | 25 kg bag or 1,000 kg jumbo bag |
Product Strengths
- Ultra-high purity and low impurities
- Excellent UHPC performance
- High activity and fine particle distribution
- Technical support for premium projects
Target Applications
- UHPC
- Premium precast components
- Anti-corrosion concrete
- Architectural concrete
Quality Assurance
- Full-spectrum chemical testing for each batch.
- Complete COA report with full composition.
- Priority small-batch trial support.
Frequently Asked Questions
When should I choose BK97?
Use BK97 for UHPC and projects requiring ultra-high purity and very low impurities.
Are R&D samples available?
Yes. Laboratory samples are available for qualified R&D projects.
