Is Iran’s UHPC concrete too tough for US bunker-buster bombs?
US strikes on Iran’s nuclear sites may have caused less damage than expected, possibly due to Iran’s use of Ultra-High Performance Concrete (UHPC). Capable of withstanding over 40,000 psi, UHPC may resist even the 30,000-pound Massive Ordnance Penetrator. If confirmed, this raises serious questions about the limits of current bunker-busting weapons.