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.

(Low powder sio2 hydrophilic fumed silica 200 for concrete ect)

Specification of Low powder sio2 hydrophilic fumed silica 200 for concrete ect

Low powder SiO2 hydrophilic fumed silica 200 is a specialized material designed for use in concrete applications. This product consists of high-purity silicon dioxide nanoparticles produced through a vapor-phase hydrolysis process. It features a surface area of approximately 200 m²/g, ensuring strong reactivity with cement particles. The hydrophilic nature allows it to bond effectively with water, improving dispersion in concrete mixes.

The primary function of this silica is to enhance the mechanical properties of concrete. It acts as a filler, reducing pore spaces within the concrete matrix. This leads to increased compressive strength and durability. The fine particle size, averaging 7-40 nanometers, ensures even distribution without clumping. The material remains chemically stable in alkaline environments, making it suitable for long-term use in concrete structures.

This silica improves workability during mixing. It reduces water demand in the concrete mix by preventing excess absorption. The result is a denser final product with reduced cracking risk. It also accelerates the hydration process, promoting faster initial setting times. This is useful in projects requiring quick turnaround without sacrificing structural integrity.

The low powder form minimizes dust during handling. This improves safety for workers and reduces waste. The product meets international standards for heavy metal content and environmental safety. It is free from harmful additives, ensuring compatibility with other concrete components like aggregates and admixtures.

Storage recommendations include keeping the material in a dry, cool environment. Moisture exposure must be avoided to prevent premature clumping. Packaging typically uses moisture-resistant bags in 10 kg or 20 kg quantities.

Application guidelines suggest adding the silica during the dry mixing phase. Optimal dosage ranges between 1-5% of cement weight, depending on project requirements. Overuse may affect setting time or workability. Testing small batches is advised to determine ideal proportions.

Safety measures involve wearing protective gloves and masks during handling. Direct inhalation of fine particles should be avoided. The silica is non-toxic but may cause mild irritation if contact with eyes or skin occurs. Immediate rinsing with water is recommended in such cases.

(Low powder sio2 hydrophilic fumed silica 200 for concrete ect)

Applications of Low powder sio2 hydrophilic fumed silica 200 for concrete ect

Low powder SiO2 hydrophilic fumed silica 200 is a fine white powder widely used in concrete applications. It improves performance by enhancing strength, durability, and workability. The material’s high surface area and reactivity make it effective in modifying concrete mixtures.

One key application is improving concrete’s mechanical properties. The silica particles fill tiny gaps between cement particles. This creates a denser structure. The result is higher compressive and flexural strength. Concrete becomes more resistant to cracks and wear over time.

The product reduces water segregation and bleeding in fresh concrete. It stabilizes the mix by binding excess water. This ensures even distribution of components. Workability improves, making the concrete easier to pour and shape. Contractors achieve smoother finishes with fewer surface defects.

Hydrophilic fumed silica boosts resistance to harsh environments. It reacts with calcium hydroxide in cement. This reaction forms additional calcium silicate hydrate (C-S-H) gel. The gel strengthens the matrix and blocks harmful substances. Concrete gains better resistance to chemicals, chlorides, and freeze-thaw cycles.

The additive lowers permeability in hardened concrete. It minimizes the formation of capillary pores. Water and aggressive agents struggle to penetrate the surface. This extends the lifespan of structures exposed to moisture or corrosive conditions.

Curing time shortens when using this silica. It accelerates hydration reactions in cement. Projects progress faster without compromising quality. Shrinkage during drying is reduced, preventing microcracks and structural weaknesses.

Low powder SiO2 hydrophilic fumed silica 200 works well with other admixtures. It maintains effectiveness alongside superplasticizers or air-entraining agents. Mix designs stay flexible, allowing customization for specific project needs.

The material supports sustainable construction. Higher performance concrete requires less frequent repairs. Resource consumption decreases over the structure’s lifetime. Less cement is needed to achieve target strengths, cutting CO2 emissions.

Applications include high-rise buildings, bridges, tunnels, and marine structures. It is also used in precast elements and decorative concrete. The product ensures reliability in demanding conditions while keeping production costs manageable.

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 Low powder sio2 hydrophilic fumed silica 200 for concrete ect

Low powder SiO2 hydrophilic fumed silica 200 for concrete improves material performance. What is it? It is a fine, white powder made of silicon dioxide. The particles have high surface area. This product is chemically treated to attract water. It is used in concrete, coatings, adhesives. The main role is to modify rheology, thicken mixes, prevent sagging.

How does it work in concrete? The silica particles form a network when mixed with water. This network traps water and solid particles. The result is reduced segregation, improved stability. The concrete becomes easier to handle. It maintains shape during curing. Cracking risks drop. The process works in wet and dry conditions.

What benefits does it offer? It boosts durability of concrete structures. The silica fills tiny gaps between cement particles. This creates a denser matrix. Water resistance improves. Strength increases over time. It reduces shrinkage during drying. The material resists chemicals better. Costs stay low due to small required amounts.

Is it safe to use? The product is non-toxic. Wear gloves and masks during handling. Avoid inhaling dust. Store in dry, cool areas. Keep away from moisture before use. Follow local disposal rules. No special permits are needed for regular applications.

How is it applied? Mix the silica into dry concrete ingredients first. Use mechanical mixers for even distribution. Add water slowly. Adjust mixing time based on consistency needs. Typical dosage is 1-5% of cement weight. Test small batches first. Adjust based on project requirements. Excess amounts may over-thicken the mix.

(Low powder sio2 hydrophilic fumed silica 200 for concrete ect)