Application of microsilica

**Application of Micro-silica in Concrete and Cement**

The use of micro-silica dust in concrete and cement has seen significant growth in recent years. Micro-silica acts as a pozzolan due to its uniform distribution and high volume of hydration products in concrete. On the other hand, its fine particles serve as a filler, reducing the size of voids in the cement paste. As a result, using micro-silica in concrete leads to the following properties:

– Increased compressive strength

– Increased abrasion resistance

– Reduced permeability

– Resistance to sulfates

– Corrosion resistance

Typically, the amount of micro-silica used in concrete is about 5 to 20 percent of the weight of the cement, although figures of up to 40 percent have also been reported.

**Application of Micro-silica in Polymer Uses**

When polymer products are extruded, micro-silica can be used as a filler and reinforcing agent to improve their impact strength and stiffness. Additionally, micro-silica enhances this process, leading to the production of smoother surfaces and increasing production efficiency.

**Application of Micro-silica in Refractories**

Micro-silica can be used in the production of refractory concretes made from calcium-aluminate cements. At the same time, this material can also be utilized in the production of other types of refractory materials. In these cases, the incorporation of micro-silica improves ceramic bonds and significantly enhances the properties of the product.

**Other Applications of Micro-silica**

Micro-silica can be used to produce various silicates because it has a high reactivity and can easily react with other elements to form silicates. Moreover, micro-silica powder is employed as coating powders, insulating powders, auxiliary materials in catalytic protection systems, and for selectively absorbing ions in the chemical industry. In any case, considering the expansion of ferrous alloy production and the increase in the amount of micro-silica dust generated, other uses in industries that require both finesse and strength are anticipated for micro-silica.