Seismic Retrofitting of RC Piers using Continuous Fiber Sheet with Large Fracturing Strain

This paper presents the experimental findings of cyclic loading test of ten half scale model of reinforced concrete bridge pier which were retrofitted by external wrapping using continuous fiber sheet with large fracturing strain, such as Aramid, PEN (Polyethylene Naphthalate), and PET (Polyethylene Terephthalate / Polyester) materials. These specimens were tested under static axial (IMP a) and reversed horizontal loading to represent earthquake excitation. The key mechanical properties of these materials are low tensile modulus of elasticity and large fracturing strain. The objective of this experiment is to get the optimum solution to achieve IO Dy as the ultimate deformation. The experimental results on the hysteretic response of test piers, ductility analysis, energy dissipation, and shear defo1111ation on the plastic hinge are presented. The existing formulae for ductility prediction of members with carl:xm and aramid sheet are not applicable to members with PET sheet