What is fly ash used for usually?
Fly ash has been used in a number of applications. A major use is as an ingredient in making concrete, to substitute for a portion of the cement or aggregates used in the concrete. Another beneficial use is for strengthening road beds. Thirdly, fly ash serves as part of the raw materials for manufacturing cement. It has also been used in many other ways including soil stabilization (improving the foundation of structures), soil improvement (improving crop growth), etc.