ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,620, issued on Feb. 10.
"Coated-fine-aggregate, concrete composition and method" was invented by Calder Hendrickson (Lubbock, Texas) and Todd Naff (Bryan, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A concrete composition and method include a portion of fine aggregate bearing a coating of a polymer or an admixture, which may be a continuous coating layer or a layer of powdered, discrete particles embedded in a binder. The polymeric coating may be an admixture in powdered form, a super absorbent polymer (insoluble in water, but absorbing water), or another polymer such as the acrylamides, co-polymers thereof, polyacrylamides, or the like (so...