Better suited for applications
SiO₂ ≥ 92%, suitable for high-strength, high-density material systems.
Product Details
92% Densified Silica Fume | Silica Fume SF-92D
Densified Silica Fume
Suitable for bridges, marine engineering, high-strength concrete, precast components, and high-performance material systems.
Increase Strength
Weather Resistance
Interfacial Adhesion
Erosion Resistance
Silicon Dioxide
>= 92%
Apparent Color
Gray to light gray
Bulk Density
450-700 kg/m3
Application Systems
Concrete / Marine Engineering
Product Overview
Delivering more consistent results for demanding engineering projects
It offers efficiency advantages in transportation, storage, and dosing, making it particularly suitable for large-scale high-strength concrete projects, marine and bridge engineering, high-strength precast components, and applications such as UHPC and RPC.
Silicon Dioxide
>= 92%
Apparent Color
Gray to light gray
Bulk Density
450-700 kg/m3
Application Systems
Concrete / Marine Engineering
Product Advantages
Direct Production, Stable Quality
More consistent batch-to-batch quality
Lower impurity content, better compatibility with admixtures, and more stable mix design performance.
High reactivity
Suitable for applications such as high-strength concrete, UHPC, and RPC.
High Loading Efficiency
Densified form, improving efficiency in transportation, storage, and dosing.
Technical Data
Chemical and Physical Properties
| Test Item | Typical Value | ASTM C1240 |
|---|---|---|
| SiO₂ Content | >= 92% | 85.0 % Minimum |
| Moisture Content | <= 2.0% | 3.0% Maximum |
| Loss on Ignition | = 118 % | - |
| Original particle size | 1.0 um | - |
| 45 μm sieve residue | 4.0 % | 10.0 % Maximum |
| Activity Index (7 days) | 108.0 % | 105.0 % Minimum |
| Activity Index (28 days) | >= 118 % | - |
| Bulk Density (Compacted) | 450-700 Kg/m³ | - |
| BET Specific Surface Area | 15,000-25,000 m²/Kg | 15,000 m²/Kg |
The data listed above is for reference only and does not constitute factory control specifications or acceptance criteria. Customers should conduct trials within their own systems to confirm product suitability.
Performance Comparison
Reference Test Data
Based on existing formulation tests, this section shows reference performance improvement from the micro-filling effect and pozzolanic reaction of silica fume. Actual results vary with matrix type, mix design, dosage, dispersion and process conditions, so sample testing is recommended.
Silica Fume Applications
Widely Used Across Industries
Ultra-High-Strength Concrete
Suitable for high-strength, high-density concrete systems with a strength class of C80 or higher.
UHPC and RPC
Optimize particle size distribution to improve matrix density and durability.
Bridge and Offshore Engineering
Improves water resistance and resistance to chloride ion penetration.
High-Strength Precast Components
Suitable for pipe piles, utility poles, bridge components, and wind turbine towers.
Tunnels and Underground Engineering
Improves concrete density and long-term water resistance.
Refractory Materials
Suitable for refractory systems containing coarse aggregates under conditions of adequate mixing.
Quality Control
Comprehensive Testing Available
ASTM C1240
EN 13263-1
GB/T 27690
COA and batch documentation
SGS can perform testing upon request.
Packaging and Logistics
Flexible Packaging, Supplied on Demand
Small-bag packaging
Suitable for small batches, experiments, and sporadic use.
Ton-bag packaging
Suitable for engineering projects and industrial use, and designed for both container loading and transshipment.
Bulk/Custom Packaging
Match pallets, labels, inner liners, and export documentation according to project requirements.
FAQ
Packaging, Loading and Shipping FAQ
Answers to common purchasing questions about packaging, export documents, sample trials, loading and delivery.
What is 92% densified Silica Fume?
92% Densified Silica Fume refers to an active, ultrafine siliceous powder with a SiO₂ content of at least 92% that has undergone a densification process. It has a high bulk density and is suitable for material systems that allow for thorough mixing, such as high-strength concrete, UHPC, precast components, and refractory castables.
What is the difference between 92% densified Silica Fume and 90% densified Silica Fume?
The 92% densified Silica Fume has a higher SiO₂ grade and is typically used in projects with stricter requirements for material density, durability, and batch consistency. While the 90% grade emphasizes a balance between performance and cost, the 92% grade is better suited for high-strength concrete, highly durable projects, and mid- to high-end refractory materials.
What applications is 92% densified Silica Fume suitable for?
92% Densified Silica Fume is primarily suitable for use in high-strength concrete, UHPC and RPC, bridge and marine engineering projects, high-strength precast components, tunnel and underground engineering, and projects requiring high weather resistance.
Can 92% Densified Silica Fume be used in UHPC?
Yes. 92% Densified Silica Fume can be used in UHPC and RPC systems to help optimize particle size distribution and improve matrix density. Since Densified products contain loose agglomerates, their use requires forced mixing, a proper dosing sequence, and a suitable water-reducing agent.
How does 92% Densified Silica Fume improve concrete performance?
92% Densified Silica Fume can enhance concrete density through the micro-filling effect, pozzolanic reaction, and optimization of the interface transition zone, thereby improving strength, impermeability, abrasion resistance, and resistance to chloride ion penetration. Actual results depend on the dosage, mix design, degree of dispersion, and curing conditions.
Does 92% Densified Silica Fume comply with ASTM C1240?
Compliance with ASTM C1240 must be determined based on complete test results, including SiO₂ content, moisture content, loss on ignition, 45 μm sieve residue, and activity index; it cannot be confirmed solely based on a SiO₂ content of 92%. Suppliers may provide a Certificate of Analysis (COA) and relevant test reports for specific batches.
Supply Capacity
Stable Delivery, Traceable Batches
9 +
Industry Applications
10+ years
Industry Application Experience
10000 +
Batch Tracking Records
50,000 +
Annual Supply Capacity (metric tons)
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