Coal ash refers to the hazardous byproducts of coal combustion at coal-based power plants — namely, fly ash, bottom ash, and boiler slag — which contain toxic materials such as arsenic and lead. It is ...
On one hand, with the retirement of coal-fired power plants the supply of fly ash has decreased. Fly ash is one of the most popular supplemental cementitious materials (SCM) in the industry, so it’s ...