Micro Silica - Densified & Undensified Silica Fume, Ultra-fine Particles For Increased Compressive Strength & Durability In High Strength Concrete Applications

Features:

SILICA FUME/ MICROSILICA:

CONCRETE APPLICATION:

Silica Fume or Microsilica is a non-crystalline polymorph of silica produced as a by-product of the production of elemental silicon or alloys containing silicon such as ferrosilicon in electric arc furnaces. It is an ultrafine, pozzolanic SCM that is used as an additive in concrete with OPC. It is graded in accordance with the standard specifications of ASTM C 1240. Some notable standard properties are as follows:

In Concrete, silica fume as an SCM provides many benefits by causing significant changes in the microstructure of concrete. Silica fume, due to its small particle size (close to 1/100^th of the cement particle size), acts as a microfiller in mixed concrete promoting very high particle packing. As a reactive pozzolanic material, the silica fume reacts with the cement during setting to form calcium silicate hydrate (CASH) phase which has much larger surface area and better binding, translating to improved hardness of the concrete.

The high surface area of silica fume and low water content of silica-fume-concrete facilitates fewer channels formed because of water escape, as a direct result of reduced bleeding. This reduces the impact of chloride attack and corrosive agents, improving the durability of concrete - a coveted property in coastal cities such as Mumbai. Reduced bleeding helps significantly speed up finishing, resulting in a continuous one-pass-finishing process. The greater slump from increased cohesion also means thicker layers in shotcrete. The enhanced mechanical properties of high strength concrete include increased compressive strength and elastic modulus, proportional at all ages.

Available:

Silica Fume or Microsilica of various grades (Silica content ranging from 85 % to 95 %) in Densified and Undensified forms for use in various high strength concrete applications.

Properties Impacted:

• Particle packing and CASH phases in concrete resulting in improved binding properties and higher bound surface area.

• Reduced or zero bleeding resulting in increased durability of concrete owing to bleed channels eliminated and improved efficiency of finishing operation.

• Improved cohesion meaning more efficient shotcreting.

• Increased compressive strength of concrete.

• Increased modulus of elasticity of concrete.

• Reduced permeability and hence better protection from abrasive or corrosive chemical attack or chloride attack.

• Reduced heat of hydration for proportional strength of concrete.

• Accelerated development of early strength of concrete or mortar.

Concrete Applications:

High strength concrete, Shotcrete, Cement-based polymer waterproofing

We are happy to help you identify your silica fume need for high strength concrete and provide technical services to optimize silica fume usage in your project.

SILICA FUME/ MICROSILICA:

CONCRETE APPLICATION:

Silica Fume or Microsilica is a non-crystalline polymorph of silica produced as a by-product of the production of elemental silicon or alloys containing silicon such as ferrosilicon in electric arc furnaces. It is an ultrafine, pozzolanic SCM that is used as an additive in concrete with OPC. It is graded in accordance with the standard specifications of ASTM C 1240. Some notable standard properties are as follows:

In Concrete, silica fume as an SCM provides many benefits by causing significant changes in the microstructure of concrete. Silica fume, due to its small particle size (close to 1/100^th of the cement particle size), acts as a microfiller in mixed concrete promoting very high particle packing. As a reactive pozzolanic material, the silica fume reacts with the cement during setting to form calcium silicate hydrate (CASH) phase which has much larger surface area and better binding, translating to improved hardness of the concrete.

The high surface area of silica fume and low water content of silica-fume-concrete facilitates fewer channels formed because of water escape, as a direct result of reduced bleeding. This reduces the impact of chloride attack and corrosive agents, improving the durability of concrete - a coveted property in coastal cities such as Mumbai. Reduced bleeding helps significantly speed up finishing, resulting in a continuous one-pass-finishing process. The greater slump from increased cohesion also means thicker layers in shotcrete. The enhanced mechanical properties of high strength concrete include increased compressive strength and elastic modulus, proportional at all ages.

Available:

Silica Fume or Microsilica of various grades (Silica content ranging from 85 % to 95 %) in Densified and Undensified forms for use in various high strength concrete applications.

Properties Impacted:

• Particle packing and CASH phases in concrete resulting in improved binding properties and higher bound surface area.

• Reduced or zero bleeding resulting in increased durability of concrete owing to bleed channels eliminated and improved efficiency of finishing operation.

• Improved cohesion meaning more efficient shotcreting.

• Increased compressive strength of concrete.

• Increased modulus of elasticity of concrete.

• Reduced permeability and hence better protection from abrasive or corrosive chemical attack or chloride attack.

• Reduced heat of hydration for proportional strength of concrete.

• Accelerated development of early strength of concrete or mortar.

Concrete Applications:

High strength concrete, Shotcrete, Cement-based polymer waterproofing

We are happy to help you identify your silica fume need for high strength concrete and provide technical services to optimize silica fume usage in your project.