BK94 micro silica powder for high performance concrete is a medium-high-purity grade (SiO₂ ≥94%) with light-colored powder. It improves compressive strength, impermeability and durability, and is suitable for HPC, surface-sensitive mortar and decorative concrete where low impurities and light color are required.
Technical Specifications
| Product model | BK94 |
|---|---|
| SiO₂ | ≥ 94.0% |
| Loss on ignition | 1.2% |
| Moisture | ≤ 1.5% |
| Water demand | 113% |
| Specific surface area | 18,000 m²/kg |
| Activity index | 118% |
| Bulk density | 350–450 kg/m³ |
| Standard | GB/T 27690-2023 |
| pH value | 7.5 |
| Packing | 25 kg bag or 1,000 kg jumbo bag |
Product Strengths
- Medium-high purity
- Light color and low impurities
- Improved HPC durability
- Densified packing available
Target Applications
- High-performance concrete
- Color-sensitive mortar
- Bridge components
- Industrial floors
Quality Assurance
- ISO 9001 quality control with GB/T 27690-2023 compliance.
- Extra impurity control for each batch.
- Free samples for color comparison.
Frequently Asked Questions
Why choose BK94?
Choose BK94 when higher purity and lighter powder color are important to the finished concrete.
Is densified packing available?
Yes. Densified jumbo-bag packing is available on request.
