Axial Load Capacity of Wall-Like RC Columns Strengthened with FRP

The confinement with fibre-reinforced polymer (FRP) is one of the most used techniques to enhance strength and ductility of existing reinforced concrete (RC) columns. Although the effective of FRP confining systems on columns with circular, square or rectangular cross sections has been extensively studied and standardized, these results are limited to sections with an aspect ratio between the two sides less than two. However, many applications of wall-like columns (member with rectangular cross section with higher aspect ratios) strengthened with FRP are developed in the practice. Moreover, the prediction of their load carrying capacity still remains of uncertain solution. In order to clarify this issue, a review of the existing analytical models is first presented. Then, available experimental results are selected from the literature to compare the performance of these models. Finally, the results are discussed to quantify their accuracy in the prediction of the axial member capacity.