The primary pozzolan used in concrete in recent years has been fly ash, a residual from coal-burning power plants. Production has diminished as coal plants close or convert to natural gas. The Western U.S. is facing supply shortages of fly ash, creating big problems for concrete suppliers, including contract delivery issues, cost, capacity limits, quality, and performance. Significant additional closures and conversions are scheduled, creating a bigger deficit in an already constrained market.
Before the use of fly ash as a concrete additive, natural pozzolans were successfully used as a raw ingredient in concrete to improve its performance and durability. Now that the availability of fly ash has become limited and the costs have increased, a replacement is needed. Geofortis is bringing superior natural pozzolans to the market that have a proven track record of meeting these needs.