08-10-2014, 04:08 PM
The upgradation of reinforced concrete buildings is frequently connected with requirements for their new utilization and for increasing load-carrying capacity of a structure. From the past earthquakes, most of the RC structures suffered damage or complete collapse mainly due to the inadequate strength and ductility of the column which play a vital role in the stability of the existing or deteriorated buildings. The existing vulnerable RC structures which have or could suffer damage due to inadequate strength can be repaired or upgraded by enhancing the ductility and/or capacity of critical column by any of the repair and strengthening techniques. Steel caging composite technique, is one of the various methods used for strengthening of rectangular reinforced concrete column. This technique is composed of steel angles and transverse steel flats as battens. In the present experimental study a rectangular reinforced concrete column is studied for flexural strength and ductility in the presence of axial load. The enhancement of strength of the column section is determined wit