The incorporation of fly ash (FA) into cement can significantly affect the setting time of concrete. Fly ash is a byproduct of coal combustion and is commonly used as a supplementary cementitious material (SCM) to enhance various properties of concrete. The impact on setting times can vary based on the type of fly ash, the proportions used, and the characteristics of the other materials in the mix.
### Type F Fly Ash
Type F fly ash is generally