أرسل هذا في رسالة قصيرة: Behaviour of reinforced concrete columns strengthened by external prepacked concrete jacketing under uniaxial compression

__    __     ___      ______     ___     _    _   
\ \\ / //   / _ \\   /_   _//   / _ \\  | \  / || 
 \ \/ //   | / \ ||    | ||    | / \ || |  \/  || 
  \  //    | \_/ ||   _| ||    | \_/ || | .  . || 
   \//      \___//   /__//      \___//  |_|\/|_|| 
    `       `---`    `--`       `---`   `-`  `-`