Researchers from the University of California and Brimstone Energy have developed a method to produce Portland cement using basalt and silicate rocks instead of limestone. This change targets the chemical process that releases massive amounts of carbon dioxide during heating, potentially cutting emissions by 80% and energy use by 40%. Because the resulting material maintains the properties of traditional Portland cement, it could be adopted without requiring builders to retrain or overhaul existing infrastructure. The primary challenge remains the low cost of limestone and the industry's slow pace of regulatory change.
