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Gray Silica Fume

Name: Gray Silica Fume
Brand: Guru Corporation
Price: 20 INR
Availability: InStock

Price 20 INR/ Kilograms

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MOQ : 1000 Kilograms

Gray Silica Fume Specification

Melting Point
About 1,600C - 1,700C

Density
700 Gram per cubic centimeter(g/cm3)

Purity(%)
>85% SiO2

Water Absorption
Very low, typically <1%

Chemical Composition
Silicon Dioxide (SiO2) mainly, with minor impurities

Application
Industrial

Usage & Applications
Used in concrete, refractories, cement manufacturing, shotcrete, and industrial flooring

Form
Amorphous powder

Hardness (%)
Not directly specified, but silica has Mohs hardness ~7

Surface Finish
Smooth, ultrafine

Product Type
Mineral Refractories

Types of Refractories
Neutral Refractory

Shape
Powder

Porosity
Low, enhances concrete density

Dimensional Stability
Excellent at high temperatures

Strength
Improves compressive and flexural strength in concretes

Specific Gravity
2.2 g/cm

Thermal Conductivity
Low, typically 0.9 - 1.2 W/m.K at 20C

Color
Grey

Toxicity
Non-toxic, but may cause dust irritation

pH Value
6.5 - 7.5

Loss on Ignition (LOI)
< 6%

Shelf Life
Indefinite under dry storage

Packaging Type
Bags or bulk

Microstructure
Spherical, amorphous particles

Particle Size
Average 0.1 to 0.3 m

Bulk Density
550 to 700 kg/m (loose, as delivered)

Gray Silica Fume Trade Information

Minimum Order Quantity
1000 Kilograms

Supply Ability
1000 Kilograms Per Day

Delivery Time
1 Week

About Gray Silica Fume

Gray Silica Fume offered by our company, is an amorphous polymorph of silicon dioxide, silica. This silica is an excellent admixture for concrete as it leads to better engineering properties. It reduces thermal cracking, improves durability, and increases strength. It is produced by some chemical processing of the ash. Gray Silica Fume provides a more uniform distribution and a greater volume of hydration products. This fume can be easily purchased by our clients at cheaper rates, as per their requirements.

Gray Silica Fume offers greater resistance to chemical attack, abrasion, and corrosion. It is more effective in concrete applications than any other source of silica fume including commercial grades. This classification of silica fume is especially useful for marine structures, bridges, and industrial flooring. This product benefits greatly from the long-term strength and density of concrete. Additionally, we provide Black Silica Fumes that are similarly effective for utilizing particular industrial applications demanding more pozzolanic qualities. Our varieties of silica fumes, including Black Silica Fumes, meet the requirements of high-performance concrete applications as well as more specialized construction projects.

Key Properties and Composition

This silica fume consists mainly of amorphous silicon dioxide (SiO2) with a purity exceeding 85%, minor impurities, and a specific gravity of 2.2 g/cm3. Its spherical microstructure and ultrafine size contribute to increased density and strength in end applications. The product maintains dimensional stability and resistance to thermal shock, ensuring superior performance in both concrete and refractory systems.

Primary Applications and Usage

Gray Silica Fume is widely used in industrial sectors, including concrete production, shotcrete, refractories, cement manufacturing, and industrial flooring. It is favored for enhancing the mechanical and durability aspects of these materials, making structures longer-lasting and more resilient. Its compatibility with neutral refractories and low porosity improves overall performance in aggressive environments.

FAQ's of Gray Silica Fume:

Q: How is Gray Silica Fume used in concrete and refractory applications?

A: Gray Silica Fume is blended with cement and aggregates, typically at 5-15% replacement levels, to significantly enhance compressive strength, flexural strength, and durability of concrete and refractory products. Its ultrafine particles fill voids, leading to denser and less permeable materials.

Q: What are the main benefits of adding Gray Silica Fume to industrial materials?

A: The addition of Gray Silica Fume increases strength, reduces permeability, improves thermal stability, and enhances chemical resistance. These benefits result in superior performance for concrete, shotcrete, refractories, and flooring exposed to harsh industrial conditions.

Q: What precautions should be taken during handling and storage?

A: Although non-toxic, Gray Silica Fume can cause dust irritation. Proper dust control measures, such as wearing masks and providing ventilation, are recommended. For best results and indefinite shelf life, store the product in dry, sealed bags or silos to prevent moisture ingress.

Q: In what forms and packaging is Gray Silica Fume supplied?

A: Gray Silica Fume is available as a loose, ultrafine powder and is typically delivered in bags or in bulk quantities, suiting both small-scale and large industrial demands.

Q: Where is Gray Silica Fume typically manufactured and supplied from?

A: It is produced by manufacturers and suppliers in India, serving both domestic and international markets. Reliable sourcing ensures consistent quality for industrial applications.

Q: What makes Gray Silica Fume suitable for high-temperature applications?

A: With a high melting point of about 1,600-1,700C and excellent dimensional stability, Gray Silica Fume is ideal for refractory and industrial uses requiring resistance to intense heat and thermal shock.

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