The SEFA Group is a national Fly Ash Sales and Marketing leader, providing service and solutions to the construction industry. For four decades, SEFA has been adept at stimulating innovation and new service offerings that can further contribute to customers’ success and environmental stewardship.
Fly ash is classified as a Pozzolan: a mineral admixture and a supplementary cementitious material that provides concrete with performance benefits such as water tightness and long-term durability. Volcanic ash, similar to today’s fly ash in its chemistry, had been used as a supplementary cementitious material in concrete dating back to the Roman Empire. This natural Pozzolan was used in structures that have lasted for thousands of years.