Effect of confinement on behavior of short concrete column

In this experimental program a series of nine one-third scale square reinforced concrete columns specimens having cross sectional dimension as 150mm x 150mm with height of 960 mm were tested. The experiment is performed for control column, columns with ferromesh jacket as confinement reinforcement in addition to stirrups and column with ferromesh jacket only as confinement reinforcement. The overall response of the specimens was investigated in terms of load carrying capacity, axial displacement, stress, strain, lateral displacement and ductility. The test results indicated that column wrapped with additional ferromesh as confinement gives 20% increase in axial strength compared to regular control column. It is observed that columns with ferromesh jacket as confinement reinforcement in addition to stirrups gives better ductility and the column wrapped only with ferromesh as additional confinement fails in ductile manner.