ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,536, issued on June 30.
"Hyaloclastite, sideromelane or tachylite pozzolan-based geopolymer cement and concrete and method of making and using same" was invented by Romeo Ilarian Ciuperca (Atlanta).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention comprises a cementitious material comprising a natural pozzolan selected from hyaloclastite, sideromelane or tachylite, wherein the natural pozzolan has a volume-based mean particle size of less than or equal to 40 micro metre. The cementitious material also comprising an aqueous alkaline activating solution suitable for forming a geopolymer. A method making a cementitious material is also disclo...