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.

(microsilica Silica fume CAS 69012-64-2 Fumed Silica Gel Nanospheres Pyrogenic Silica used as concrete additive)

Specification of microsilica Silica fume CAS 69012-64-2 Fumed Silica Gel Nanospheres Pyrogenic Silica used as concrete additive

Microsilica silica fume, referred to as CAS 69012-64-2, is a superfine powder. It’s also called fumed silica or pyrogenic silica. This product contains tiny round bits. These fragments are exceptionally little, normally below 1 micron. They form throughout silicon metal manufacturing. This happens at very heats. The result is a product with high pureness. It has mostly silicon dioxide (SiO2). The normal web content is over 90%. Typically it reaches 95% or even more.

This silica fume works as an effective concrete additive. Its primary work is boosting concrete performance. The small fragments fill up the tiniest spaces in between cement grains. They additionally respond with the chemicals in cement. This reaction is called pozzolanic. It creates extra strong binding material inside the concrete. This process makes concrete a lot stronger. It increases the compressive toughness considerably. Flexural strength likewise boosts.

Including microsilica makes concrete denser. It lowers the area inside the concrete mix. This reduces permeability dramatically. Water and dangerous chemicals like chlorides struggle to pass through. This protects the steel reinforcement inside from rust. Concrete lasts much longer. It withstands severe atmospheres much better. This includes places revealed to de-icing salts or salt water.

Microsilica likewise boosts the bond in between concrete and steel reinforcement. It makes the concrete surface area harder. This raises abrasion resistance. Surface areas like commercial floorings or sidewalks use down slower. The product helps manage bleeding. Bleeding is when water rises to the surface of fresh concrete. Less bleeding indicates a better surface area coating. Workability could reduce a little. Modifications to the mix design are commonly needed. Plasticizers are frequently made use of along with microsilica.

Using this additive prevails in high-performance concrete applications. Instances include bridges, vehicle parking frameworks, marine frameworks, and high-rise buildings. It gives crucial longevity and strength advantages.

(microsilica Silica fume CAS 69012-64-2 Fumed Silica Gel Nanospheres Pyrogenic Silica used as concrete additive)

Applications of microsilica Silica fume CAS 69012-64-2 Fumed Silica Gel Nanospheres Pyrogenic Silica used as concrete additive

Workers add microsilica, additionally called silica fume, to concrete mixes. Its tiny fragments fill up the areas in between cement grains. This makes the concrete much denser. Denser concrete is stronger. It lasts much longer also. Microsilica reacts with lime in the concrete. This reaction produces added solid sealing product. The concrete gains greater compressive stamina. It gains higher flexural strength additionally. This implies structures can handle larger loads. They withstand breaking much better.

Microsilica significantly minimizes how much water can go through concrete. Water and unsafe chemicals like chlorides can not penetrate conveniently. This shields the steel reinforcement inside from rusting. Corrosion creates concrete to break apart. Structures near the ocean or roadways salted in wintertime advantage extremely. Bridges and parking lot last a lot longer.

The concrete surface area ends up being tougher and smoother with microsilica. This surface stands up to wear from website traffic or equipment. It withstands chemical strike from acids or sulfates discovered in soil or factories. This is essential for commercial floors and chemical plant frameworks. Microsilica helps control alkali-silica reaction. This response triggers harmful development and splits in some concretes. Including microsilica lessens this issue.

Workers usually locate concrete with microsilica simpler to pump. It sticks together much better. The mix is less likely to separate. This is handy for positioning concrete in high buildings or complicated types. The great particles boost the bond between new concrete and old solidified concrete. This is key for fixings. Fire resistance improves because the thick concrete reduces warm transfer. Microsilica works well with other ingredients like superplasticizers. This enables really strong, really resilient concrete blends.

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 microsilica Silica fume CAS 69012-64-2 Fumed Silica Gel Nanospheres Pyrogenic Silica used as concrete additive

What is microsilica silica fume?
Microsilica silica fume is a very fine powder. Its CAS number is 69012-64-2. People call it fumed silica or pyrogenic silica too. It’s made of tiny, round particles. These particles are extremely small. They are much finer than cement particles. This powder comes from silicon metal production.

Why add microsilica to concrete?
Adding microsilica makes concrete much stronger. It fills the tiny spaces between cement grains. This makes the concrete denser. Denser concrete is harder. It lasts longer. It resists water and chemicals better. This is good for tough places like bridges or marine structures.

How much microsilica should be used?
Typical amounts are 5% to 10% of the cement weight. Don’t use too much. Too much can make the concrete very sticky. It becomes hard to place and finish. The exact amount depends on the mix design. The project goals matter too. Always follow supplier advice or mix specifications.

Does microsilica change concrete setting time?
Yes, it often makes concrete set faster. The concrete hardens more quickly. This needs careful planning during placement. Contractors must work efficiently. Sometimes admixtures help control the setting time. Testing the mix beforehand is important.

Is microsilica safe to handle?
Microsilica dust is very fine. Breathing it in is bad. Use good dust control. Wear proper protective gear. This includes gloves, eye protection, and a respirator. Follow all safety instructions on the product label. Handle it carefully like other fine powders.

(microsilica Silica fume CAS 69012-64-2 Fumed Silica Gel Nanospheres Pyrogenic Silica used as concrete additive)