This work is carried out to evaluate the possibility of using to-be-wasted steel as reinforcement after welding together pieces of reinforcing steel bars left over during construction activities. Tests were performed on a total of nine samples. These were made by welding pieces of reinforced steel bars purchased from the local scrap steel market. The samples were tested in uniaxial tension using a universal testing machine (UTM). It was found that the failure of the welded bars is governed by the thickness of the weld. It is concluded that suitable design of the weld is essential for achieving the desired level of ductility/elongation of these bars, if they are to be used as conventional reinforcement in reinforced concrete members.

Authors are working as Lecturers at Department of Civil Engineering in Sir Syed University of Engineering & Technology - Karachi, Pakistan.