SF960U Undensified Silica Fume
Premium raw microsilica with uncompromised reactivity for the most demanding applications in UHPC, refractories, and advanced composites.
Uncompromised Performance for Demanding Applications
SF960U is supplied in its raw, undensified form to preserve the ultra-high reactivity essential for cutting-edge construction materials.
Maximum Pozzolanic Reactivity
SF960U maintains the original particle structure of silica fume, ensuring maximum surface area and chemical reactivity. This makes it the preferred choice for applications where every fraction of performance matters.
Unlike densified products, SF960U requires no breakdown during mixing, allowing for immediate and complete dispersion in concrete matrices. This results in superior particle packing and more efficient pore refinement.
- Ultra-high SiO₂ content (>96%) for maximum performance
- Preserved particle morphology for optimal reactivity
- Ideal for Ultra-High Performance Concrete (UHPC)
- Superior refractory and ceramic applications
- Available in powder form or as ready-to-use slurry
- Consistent quality with rigorous quality control
Technical Specifications
High-purity white microsilica with consistent quality
Physical Properties
| Parameter | Value |
| Form | Powder |
| Color | Gray |
| PH Value | 5-8 |
| Bulk Density | 230-450 kg/m³ |
Chemical Composition
| Component | Content (%) |
| SiO₂ | ≥ 94% |
| Moisture Content | ≤ 2% |
| Loss on Ignition | ≤ 3% |
| Al₂O₃ | ≤ 0.8% |
Specialized Applications
SF960U is engineered for the most demanding construction and industrial applications
UHPC & Advanced Composites
Enhances high-temperature strength and stability in industrial furnace linings
Refractory Castables
Enhances high-temperature strength and stability in industrial furnace linings
Blast-Resistant Structures
Provides exceptional toughness and impact resistance for protective structures
Marine & Offshore
Superior resistance to chloride penetration and chemical attack in harsh environments
R&D & Specialty Applications
Ideal for research institutions and specialized product development
Chemical-Resistant Flooring
Creates impermeable surfaces resistant to industrial chemicals and abrasion
Why Choose Our SF960U for Refractory Applications
SF960U undensified silica fume delivers superior performance in demanding high-temperature environments, making it the ideal choice for advanced refractory formulations.
Exceptional High-Temperature Stability
SF960U maintains structural integrity and performance at extreme temperatures exceeding 1500°C, ensuring reliable operation in the most demanding thermal environments.
- Reduced thermal spalling
- Minimized crack formation
- Enhanced thermal shock resistance
Superior Refractory Strength
The ultra-fine particles of SF960U create a dense, cohesive matrix that significantly increases cold crushing strength and modulus of rupture in refractory castables.
- Increased mechanical strength
- Improved abrasion resistance
- Enhanced load-bearing capacity
Chemical Corrosion Resistance
SF960U’s high purity (>94% SiO₂) and fine particle structure provide excellent resistance to chemical attack from slags, fluxes, and molten metals.
- Reduced slag penetration
- Resistance to acidic environments
- Protection against alkali attack
Optimized Installation Properties
The undensified nature of SF960U ensures excellent dispersion and workability, allowing for easier installation and more consistent refractory performance.
- Improved flow characteristics
- Reduced water requirements
- Enhanced placement efficiency
Reduced Linear Change
SF960U minimizes permanent linear change during firing, maintaining dimensional stability and preventing gaps in refractory linings.
- Improved dimensional accuracy
- Reduced joint formation
- Extended service life
Environmental & Economic Benefits
By extending refractory service life and reducing maintenance requirements, SF960U delivers significant cost savings and environmental advantages.
- Reduced downtime
- Lower replacement frequency
- Decreased material consumption
Technical Specifications
High-purity SF960U Undensified Microsilica with Consistent Quality
Physical Properties
| Parameter | Value |
| Color | Grey |
| LOI | 3.2 |
| PH Value | 5-8 |
| Bulk Density | 230-450 kg/m³ |
Chemical Composition
| Component | Content (%) |
| SiO₂ | ≥ 94% |
| K₂O | ≤0.5% |
| Fe₂O₃ | ≤ 0.5% |
| Al₂O₃ | ≤ 0.1% |
What Our Clients Say
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