95% Undensified Silica Fume


95% Undensified Silica Fume



95% Undensified Silica Fume is a micro silica fume with 95% SIO₂ content, and the Bulk density is 240-320kg/m³.

We also provide 95% Densified Silica Fume for your choice.

Product Highlights

• Unrivaled Strength Amplification: Crafted to meet the demands of modern construction challenges, our 95% Undensified Silica Fume is an indispensable ingredient for producing high-strength concrete. By significantly increasing the compressive and flexural strength of concrete mixes, it paves the way for structures that can withstand formidable loads and environmental pressures.

Densification and Impermeability: When added to concrete formulations, this silica fume’s unique particle size distribution contributes to the remarkable reduction of voids within the material. The result? Concrete that boasts exceptional impermeability, preventing the penetration of harmful agents such as water, chemicals, and corrosive elements. This translates to longer-lasting structures with lower maintenance requirements.

Enhanced Durability: The durability of concrete often dictates the longevity of structures. Our 95% Undensified Silica Fume enhances concrete’s resistance to abrasion, freeze-thaw cycles, and other deteriorative factors. This translates into structures that remain steadfast against the test of time, reducing the need for frequent repairs or replacements.

Optimized Workability: Despite its formidable strength-enhancing attributes, incorporating our silica fume into your concrete mix doesn’t compromise workability. Its finely engineered particles integrate seamlessly, ensuring ease of placement and finishing, even in complex architectural designs.

Eco-Conscious Solution: Sustainability lies at the core of our product’s philosophy. By using our 95% Undensified Silica Fume, you’re choosing an eco-conscious option that reduces the need for clinker production in cement, thus curbing carbon emissions. Join the movement towards greener construction practices while achieving exceptional performance.

95% Undensified Silica Fume Parameters

National Standards for Silica Fume for Concrete
National Standards and OrganizationsEuropeNorwayFranceAustraliaUnited StatesCanadaJapanChina
Standard Number132633045P18-50235861240A23.5A62071873627690
SiO2 %   ≥858585858585858585
SO3  %   <2 2.53 13  
CI- %   <0.3Report0.2Report
CaO  %   <12    1  
MgO  %   <      5  
Si %  <0.4     0.4  
Na2O+K2O     %  <  4     1.5
C    %   <  4      
Water Content   %   <   23 333
Burn Vector   %   <45 666564
Specific Surface Area ㎡/g15-35≥1220-35   ≥15≥15≥15
45μm Sieve Residue  %   <    1010 5 
Loose capacity   kg/m³   ReportReport    
Specific Gravity g/㎝³  2.1-2.3   Report  
Water Demand Ratio     %   ≤       125125
Volcanic Ash Activity Index%(3d)  ≥         
%(7d)  ≥   Report105858595105
%(28d) ≥10095    100115 
Water to Glue Ratio0.50.5  0.484
ConservationStandardStandard  AcceleratedAcceleratedStandardStandardAccelerated

What makes Ewende the best-in-class choice?

Ewende 95% Undensified Silica Fume is carefully and accurately processed to ensure key quality parameters, with a careful choice of raw materials (low alkalis, low volatiles), constant quality control, thanks to the application of our rigorous Statistical Process Control System (SPC). This ongoing quality assurance program includes continuous in-process monitoring and analysis of our production, stable charges and adjustments in furnace conditions and post-control of finished products.

This results, among other things, in:

①A higher percentage of silicon recovery and a lower level of impurities

②Consistent quality and good workability in flow and setting and hardening properties achieved through chemical consistency.

95% Undensified Silica Fume Application

In construction, the Ewende 95% Undensified Silica Fume improves the performance of a wide range of construction materials in a variety of applications:

①High performance concrete with microsilica reduces construction time and provides structural advantages and durability for buildings, bridges, transport tunnels, roadways, etc.

②Fiber cement with microsilica is used in roofing materials, such as flat and corrugated sheets, tiles, pipes and moldings for new structures or to efficiently help replace asbestos.

③Gypsum board with microsilica improves fire resistance and core strength.

For refractory materials, Ewende 95% Undensified Silica Fume offers the following advantages:

①Improved strength and service life in high-temperature applications

②Compatible with the making of complex structures, such as castables and shaped parts, thanks to good placement characteristics and low porosity, combined with excellent heat resistance properties.

For oilfield cementing operations, Ewende 95% Undensified Silica Fume offers the following advantages:

The Oilfield drilling, cementing and completion portfolio include numerous microsilica additives to ensure essential bonding and mechanical properties.

95% Undensified Silica Fume Packaging

We can also produce according to your requirement. Get in touch now!

Quality Assurance

Backed by rigorous quality control measures, our 95% Undensified Silica Fume is manufactured to meet the highest industry standards. Each batch undergoes meticulous testing to ensure consistent particle size distribution, chemical composition, and performance characteristics.

Other Powdered Silica Products

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Ewende’s mission is to provide professional services, high quality products, strict after-sales control, and actively solve customer problems for mutual benefit and win-win.

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silica fume powder