Overview of Fumed Silica

Fumed silica, also known as pyrogenic silica, is an ultra-fine, high-purity amorphous silicon dioxide (SiO2) produced via the combustion of silicon tetrachloride in an oxygen-hydrogen flame. It appears as a fluffy white powder and is valued for its ability to thicken, stabilize, and reinforce materials.

Features of Fumed Silica

• High Surface Area: Typically ranges from 50 to 380 m²/g, providing excellent thickening and reinforcing properties.
• Hydrophilic or Hydrophobic Variants: Available in both forms depending on surface treatment, allowing for tailored applications.
• Excellent Thixotropy: Increases viscosity and improves flow properties of liquids and pastes.
• Chemical Inertness: Resistant to most chemicals, making it suitable for a wide range of industrial uses.

•  Enhances free-flowing properties and stability.

(Whole Micro Silica Fume Grade 92 Microsilica Fume for Concrete)

Specification of Whole Micro Silica Fume Grade 92 Microsilica Fume for Concrete

This whole micro silica fume Grade 92 is a top-tier material designed to boost concrete performance. It consists of incredibly fine particles, much smaller than cement grains. These particles fill the tiny spaces between cement particles effectively. This action creates a denser concrete matrix.

The “Grade 92” label means the silica content is consistently high, at least 92% pure silicon dioxide (SiO2). This high purity is vital for strong chemical reactions with cement. This reaction forms extra calcium silicate hydrate (C-S-H) gel. This gel is the main binder holding concrete together. More C-S-H gel means significantly stronger concrete.

Using this microsilica fume makes concrete much less permeable. Water and harmful chemicals like chlorides or sulfates struggle to penetrate. This protects reinforcing steel from corrosion. It also makes the concrete more resistant to chemical attack and freeze-thaw damage. The result is a structure that lasts much longer.

Concrete incorporating this material gains substantial compressive strength, flexural strength, and bond strength. It achieves high early strength gain too. This allows for faster formwork removal and project progression. The concrete mix becomes more cohesive. This reduces segregation and bleeding, improving surface finish and uniformity.

This microsilica fume works exceptionally well in high-performance concrete (HPC), ultra-high-performance concrete (UHPC), shotcrete applications, and high-strength precast elements. It enhances the durability of marine structures, bridge decks, parking garages, and industrial floors exposed to harsh conditions. Proper mix design and dosage are essential. Typically, it replaces 5-10% of the cement weight. Adequate water reduction and superplasticizer use are necessary to maintain workability. Correct curing practices are critical to achieve the full benefits.

(Whole Micro Silica Fume Grade 92 Microsilica Fume for Concrete)

Applications of Whole Micro Silica Fume Grade 92 Microsilica Fume for Concrete

Grade 92 microsilica fume is an ultrafine powder. It comes from silicon metal production. This material is very small. Its particles are much finer than cement. Adding it to concrete mixes brings big improvements.

It fills the tiny gaps between cement grains. This makes the concrete much denser. Denser concrete is stronger concrete. The final hardened product gains significant compressive strength. It also gains better flexural strength. This is good for structures needing high load capacity.

Water struggles to pass through this dense concrete. The permeability drops a lot. This is crucial for durability. Less water inside means less freeze-thaw damage in cold weather. It also means less corrosion for steel reinforcement bars. Harsh chemicals find it harder to attack the concrete too. Structures last longer in tough environments.

Using microsilica fume changes the fresh concrete. The mix becomes stickier. It holds together better. This reduces bleeding. Bleeding is when water rises to the surface. Less bleeding gives a better surface finish. It also helps with pumping concrete over long distances. The mix stays uniform. Finishers get a smoother, harder surface after placement. This is important for architectural concrete.

Builders use it in demanding applications. High-rise buildings need the extra strength. Marine structures benefit from the saltwater resistance. Bridge decks last longer because of reduced corrosion. Repair mortars bond stronger to old concrete. Industrial floors withstand heavy wear better.

Company Introduction

Welcome to HiphopGalaxy, a trusted global supplier of high-quality silicon dioxide (SiO2) powder, renowned for its exceptional purity and performance. Established with a vision to deliver cutting-edge materials that meet the diverse needs of modern industries, we have positioned ourselves as a leading player in the international market.

Our SiO2 powders find applications across multiple sectors, including adhesives, coatings, pharmaceuticals, cosmetics, polymers, and electronics. Each application benefits from the unique properties of our products—high surface area, excellent thixotropy, chemical inertness, and superior reinforcement capabilities. Whether you need hydrophilic or hydrophobic variants, we offer tailored solutions to meet your specific requirements.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Whole Micro Silica Fume Grade 92 Microsilica Fume for Concrete

What is Micro Silica Fume Grade 92?
Micro Silica Fume Grade 92 is a very fine powder. It comes from producing silicon metal or ferrosilicon alloys. This powder has at least 92% silicon dioxide. The particles are extremely small. They are much smaller than cement particles.

Why use it in concrete?
Adding Micro Silica Fume Grade 92 makes concrete much stronger. It makes concrete much more durable. The tiny particles fill the tiny spaces between cement grains. This creates a denser concrete mix. Water cannot penetrate as easily. The silica fume also reacts with cement. This reaction creates more strong binding material. The result is concrete with higher compressive strength, better abrasion resistance, and lower permeability.

How much should I add to concrete?
The typical dosage ranges from 5% to 10% by weight of the cement. Do not exceed 10%. Higher amounts make the concrete mix very sticky and hard to work with. You must adjust the water content. You must use a superplasticizer. This keeps the concrete workable. Precise batching is critical. Consult mix design guidelines for your project.

Is it safe to handle?
Micro Silica Fume Grade 92 is a fine powder. Breathing the dust is harmful. Always wear proper protective equipment. Use a NIOSH-approved respirator. Wear safety goggles and gloves. Handle it in well-ventilated areas. Avoid creating dust clouds. Follow the material safety data sheet (MSDS) instructions strictly.

How should I store it?
Store Micro Silica Fume Grade 92 in a dry place. Keep the bags sealed until use. Moisture causes the powder to clump. Clumped material is difficult to disperse in concrete. Use pallets. Keep bags off the floor. Protect bags from rain and damp conditions. Use older stock first.

(Whole Micro Silica Fume Grade 92 Microsilica Fume for Concrete)