Abstract: There is different techniques to increase existing column capacities; however, such techniques differ in their advantages and disadvantages. In this research work, it is intended to study the effectiveness of an alternative technique involving micro-concreting (around square specimen to obtain circular) for increasing existing column capacity without much increase in section dimensions under axial compressive load using 200 T compression testing machine. The objectives of this research are to understand the behavior of R.C square, R.C square micro-concreted to circular (SMC) & R.C integral circular specimens subjected to axial compression & to compare the effect of CFRP confinement on the above three types of column specimens by means of an experimental investigation.