US Patent Issued to Imam Abdulrahman Bin Faisal University on Feb. 11 for "Rejuvenation of reclaimed asphalt pavement" (Saudi Arabia Inventors)

ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,221,381, issued on Feb. 11, was assigned to Imam Abdulrahman Bin Faisal University (Dammam, Saudi Arabia).

"Rejuvenation of reclaimed asphalt pavement" was invented by Muhammad Abubakar Dalhat (Dammam, Saudi Arabia) and Sami Abdullah Osman (Dammam, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of rejuvenating reclaimed asphalt pavement (RAP) is provided. The method includes mixing the RAP with oil sludge, at least one asphalt binder, and at least one aggregate at a temperature of 100-200deg C. to form a mixture. The method further includes compacting the mixture to form a rejuvenated paving material. The oil sludge is 60-80 wt. % ...