
What is Fly Ash Cement?
Fly ash is a byproduct of coal combustion, with distinct properties based on the type of coal burned. Class C fly ash, derived from the burning of younger lignite or subbituminous coal, possesses self-cementing and pozzolanic properties. In the presence of water, it will harden and strengthen over time without the need for an activator. Conversely, Class F fly ash results from the burning of older, harder anthracite or bituminous coal and is also pozzolanic. However, it requires a cementing agent, such as Portland cement, quicklime, or hydrated lime, along with water, to react and form cementitious compounds. Both types are utilized in various construction applications for their unique binding qualities.
The Future of Fresh Fly Ash Availability



Analyzing Critical Data for Strategic Planning
Explore our dynamic map showcasing estimated quantities of fresh fly ash available for beneficial use across the U.S. This essential resource provides forward-looking insights into the declining trends of fresh fly ash availability over time, helping industries make informed decisions.
Key Insights from the Map:
- Current Availability (2025): Evaluate the existing supply of fresh fly ash from active coal combustion sites.
- Future Projections:
- 2030: Gain clarity on anticipated availability trends.
- 2035: Understand projected declines to adapt your strategies early.
- Clear Data Sources: Built from an aggregation of public and proprietary data, last updated in 2024, this map is updated annually to keep you informed.
Why This Matters
Fresh fly ash is a vital material for industries ranging from construction to energy. With availability in decline, early planning and adaptation are critical for maintaining efficiency and sustainability in your operations.
Make Smarter, Sustainable Decisions
By visualizing current and future trends, you’ll gain the clarity needed to future-proof your projects while contributing to environmental responsibility through informed material sourcing.
Don’t get left behind—access the data you need to stay ahead in a changing landscape.