High purity, more stable performance
With low impurity content and stable reactivity, it is suitable for demanding applications such as UHPC, high-strength concrete, and high-performance grouts.
Product Details
96% Densified Silica Fume | Silica Fume SF-96D
Densified Silica Fume
It is primarily intended for use in UHPC, RPC, high-strength concrete, high-strength precast components, and other material systems that require high purity, stability, and high-temperature performance.
High purity, low impurities
High transportation efficiency
High reactivity
Traceable Quality
Silicon Dioxide
>= 96%
Apparent Color
Light gray to dark gray
Bulk Density
450-700 kg/m3
Application Systems
Durable Engineering Concrete
Product Overview
Meeting purity and stability requirements
MSILI 96% Densified Silica Fume is a highly reactive siliceous material with a silicon dioxide (SiO₂) content of at least 96%. The product undergoes a thorough densification process that significantly increases its bulk density while maintaining the pozzolanic activity and micro-filling capabilities of silica fume. This reduces dust generation during transportation and feeding, making it more suitable for large-scale storage and transportation, automated feeding, and continuous production.
Silicon Dioxide
>= 96%
Apparent Color
Light gray to dark gray
Bulk Density
450-700 kg/m3
Application Systems
Durable Engineering Concrete
Product Advantages
Direct Production, Stable Quality
Greater shipping efficiency
The products have a high bulk density, occupying less space for the same weight, which increases container loading capacity and reduces transportation and warehousing costs.
Suitable for automated feeding
Densified particles reduce dust dispersion during packaging, handling, and feeding, making them suitable for big-bag feeding, silo storage, and continuous production lines.
Synergy Between Microfilling and Reactive Behavior
Ultrafine particles can fill the micro-pores within the material, optimize the particle size distribution, and, through chemical reactions, enhance the material’s density, strength, impermeability, wear resistance, and high-temperature performance.
Technical Data
Chemical and Physical Properties
| Test Item | Typical Value | ASTM C1240 |
|---|---|---|
| SiO₂ Content | >= 96% | 85.0 % Minimum |
| Moisture Content | <= 2.0% | 3.0% Maximum |
| Loss on Ignition | <= 3.0% | 6.0% Maximum |
| Specific Surface Area | 15,000-25,000 m²/Kg | 15,000 m²/Kg |
| Bulk Density (Compacted) | 450-700 Kg/m³ | - |
| Activity Index (7 days) | 112.0 % | 105.0 % Minimum |
| Activity Index (28 days) | >= 118 % | - |
| Average particle size | 1.0 um | - |
| 45 μm sieve residue | 3.0 % | 10.0 % Maximum |
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
High-Performance Concrete
Used in bridges, port structures, tunnels, and precast components to enhance impermeability, chloride resistance, and durability.
UHPC (Ultra-High-Performance Concrete)
Improves particle size distribution and the interfacial transition zone, enhancing early strength, density, and surface quality.
Ultra-high-strength concrete (C120 and above)
It can be used to fill the internal pores of cement paste and improve the interface transition zone through secondary pozzolanic reactions.
High-Strength Precast Components
It helps improve the surface density, early strength, wear resistance, and dimensional stability of structural components.
Oil Well Cement
It can be used in oil well cement to help improve the material’s density, impermeability, abrasion resistance, and structural stability under high-temperature conditions.
Specialty Cement-Based Materials
Used in high-performance grouts, wear-resistant mortars, industrial flooring, and other specialty cement-based materials, providing both interface reinforcement and resistance to efflorescence.
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 to accommodate 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.
For which applications is 96% Densified Silica Fume primarily suitable?
It is primarily suitable for UHPC, RPC, high-strength concrete, high-strength precast components, high-performance grouts, oil well cement, and other systems that require high purity and stability of Silica Fume.
Does densified Silica Fume perform better than the dispersible type?
Not necessarily. Densification primarily addresses issues related to transportation, loading, dust generation, and automated feeding. The final performance depends on whether the densified particles can fully open up during mixing. If the mixture lacks coarse aggregate shear or has insufficient mixing intensity, undensified or uncompacted products may yield more stable dispersion results.
What is the recommended dosage of 96% Silica Fume in UHPC?
Trial mix designs can begin with an admixture level of 15%–25% of the cement weight. The specific admixture dosage must be determined comprehensively based on cement reactivity, quartz fume gradation, water-to-binder ratio, water-reducing admixture compatibility, and target strength.
Can 96% Densified Silica Fume be used in high-performance grout?
Yes. High-purity Silica Fume can serve as a key component in the gel-binding system of high-performance grout. Initial trial mixes can start at 4%–6% of the total formulation weight, followed by a comprehensive evaluation of properties such as 3-day, 7-day, and 28-day strength, as well as impermeability and freeze-thaw resistance.
Can the product be supplied in accordance with ASTM C1240?
Production and testing can be conducted according to customer requirements and mutually agreed-upon technical specifications. Before placing an order, we recommend specifying the SiO₂, moisture content, loss on ignition, 45-μm sieve residue, activity index, bulk density, and packaging requirements.
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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