Many precasters have discovered the benefits of using fly ash in their mix designs. Fly ash is a cementitious material that enhances concrete’s workability, strength and durability, and it often provides a cost savings over using portland cement alone. But it’s also good for the environment. Using fly ash can be win-win-win.
Fly ash is a pozzolan and is by far the most widely used supplementary cementitious material in the manufactured concrete products industry because of its low cost, wide availability and concrete property-enhancing characteristics. It is also considered a sustainable practice to use fly ash. The U.S. Green Building Council recognizes fly ash as a pre-consumer recycled material – a beneficial strategy for CO2 reduction.
Fly Ash - A Hazardous Material? By now, you have probably heard of the controversy brewing about the U.S. Environmental Protection Agency’s (EPA) reclassification of fly ash, a coal combustion byproduct, that would make it a hazardous material. So, why does this matter and what are the facts?