ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,662, issued on June 10.

"Systems and methods for self-sustaining reactive cementitious systems" was invented by Marie D. Jackson (Salt Lake City) and Philip F. Brune (Parkland, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The described systems, methods, and compositions relate to systems, methods, and compositions for forming one or more cementitious materials that cure into one or more mortars or concretes. More particularly, some embodiments relate to systems, methods, and compositions for producing cured cementitious materials that tend to increase in strength over time due to the use of one or more reactive aggregates that interact with o...