US Patent Issued to The U.S. Department of Transportation. Federal Highway Administration on March 11 for "Method for the assessment of alkali-silica reactivity of aggregates and concrete mixtures" (Maryland, Virginia Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,970, issued on March 11, was assigned to The U.S. Department of Transportation. Federal Highway Administration (Washington).

"Method for the assessment of alkali-silica reactivity of aggregates and concrete mixtures" was invented by Terence S Arnold (Washington Grove, Md.), Chandni Balachandran (McLean, Va.) and Jose F Munoz (Ellicott City, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Chemical test methods for evaluating the alkali-silica reactivity (ASR) of an aggregate or an aggregate within a particular concrete job mix design by exposing the aggregate to a simplified system with the same or simulated long-term pore solution conditions is ...