Microsilica Powder

Description

Microsilica Powder

One of the main reasons for the permeability of concrete is the presence of fine and microscopic voids between the aggregates, which are formed due to a lack of fillers and fine particles. Additionally, during the hydration process, the evaporation of water creates capillary tubes, which further increases the permeability of the concrete. To reduce this permeability, the use of silica fume or microsilica powder as a suitable additive is recommended. Silica fume particles, which are finer than cement grains, can effectively fill these microscopic spaces. Microsilica powder is a gray-colored powder that contains about 94-96% silicon dioxide (SiO2), and it is produced during the production of ferrosilicon in electric arc furnaces. This powder is added to concrete during production to enhance certain properties. As a result, adding silica fume to concrete compresses the cement paste structure, reduces permeability, and increases the concrete’s strength.

Features and benefits Microsilica Powder

• Increases tensile, compressive, and flexural strength of concrete
• Enhances resistance to concrete wear
• Improves electrical properties of concrete and prevents rebar corrosion
• Increases durability and stability of concrete
• Reduces cement consumption in concrete mix
• Decreases the potential for alkali-aggregate reactions
• Protects concrete against chemical attacks
• Prevents the occurrence of cancer-related phenomena
• Improves workability and facilitates concrete placement
• Increases cohesion and reduces permeability of concrete
• Enhances concrete mass density

More products ; microsilica products

Application

• Producing concrete with high compressive strength
• Creating concrete with outstanding mechanical properties
• Ideal for producing dense, impermeable concrete
• Suitable for use in all structural elements
• Applicable in water structures like swimming pools, reservoirs, and treatment plants
• Suitable for foundation and bridge deck concrete work
• Ideal for tunnel construction and water transmission projects
• Increases concrete strength and adhesion
• Improves the thickness of concrete formwork
• Prevents corrosion of steel reinforcement in concrete
• Enhances the mechanical and thermal properties of ceramics
• Suitable for improving the mechanical properties and chemical resistance of paints

How to use micro-silica powder

Micro-silica powder can be added to the concrete mix using one of the following methods:

1- The micro-silica powder can be combined with a portion of the mixing water to create a slurry, which is then added to the concrete mix.

2- The silica fume can be added to the dry components during the concrete mixing process.

3- The best method is to combine the micro-silica powder with a portion of the mixing water and a specific amount of concrete plasticizer, then mix it thoroughly using a high-speed mixer before adding it to the concrete.

Technical specification table

State	Pozzolan powder
Color	Light or dark gray
Specific weight	3% gr/cm3
Standard	SSIRI 13278 – ASTM C1240
Shape of spherical	Non-crystalline particles

 

Packing

20 to 40 kg bag

Janbo 300 to 500 kilos