BK90 micro silica powder for high performance concrete is a fine pozzolanic admixture for modern concrete. It optimizes pore structure inside the concrete matrix and improves compressive strength, impermeability and abrasion resistance. It is widely used in high-strength concrete, bridge components and special mortar projects with balanced performance and cost.
Technical Specifications
| Product model | BK90 |
|---|---|
| SiO₂ | ≥ 90.0% |
| Loss on ignition | 1.8% |
| Moisture | ≤ 1.5% |
| Water demand | 112% |
| Specific surface area | 18,000 m²/kg |
| Activity index | 115% |
| 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
- Balanced strength and cost
- Pore refinement and water reduction
- Stable general concrete grade
- Multiple packing options
Target Applications
- High-strength concrete
- Bridge and highway components
- Hydraulic structures
- Industrial floors
Quality Assurance
- ISO 9001 quality control with GB/T 27690-2023 compliance.
- Full-item laboratory inspection before shipment.
- Free trial samples available.
Frequently Asked Questions
What is the recommended dosage?
A typical starting range is 5–10% of cement weight. Confirm the final dosage by mix trial.
Can you supply jumbo bags?
Yes. Both 25 kg bags and 1,000 kg jumbo bags are available.
