What is a primary application of flyash collected by pollution control devices?

Fly ash is primarily used in the concrete industry due to its pozzolanic properties, which enhance the performance of concrete when incorporated into mixes. When mixed with water and lime, fly ash reacts chemically to form compounds that contribute to the strength and durability of concrete. This not only improves the structure of concrete but also provides benefits such as reduced permeability, increased workability, and improved resistance to chemical attacks.

Moreover, the use of fly ash in concrete can lead to a reduction in the amount of portland cement required, thereby decreasing greenhouse gas emissions associated with cement production. The utilization of fly ash also promotes sustainability by recycling waste material from coal combustion, effectively reducing landfill use and conserving natural resources.

In contrast, while fly ash may have niche applications in other industries, such as providing lightweight filler in products, its dominant and most impactful use remains in enhancing concrete formulation and performance.