An experimental study on eccentric compression reinforced concrete columns strengthened with HDPFs

In this paper, six reinforced concrete columns strengthened by high ductility polyester fibers and two reinforced concrete columns were used to perform the eccentric compressive test. The factors, including reinforcement form, fibers layers, and eccentricity, were studied. The test results show that the high ductility polyester fiber can obviously improve the bearing capacity of reinforced concrete and the polyester fibers can improve the deformation capacity of members and the reinforced concrete columns strengthened by high ductility polyester fibers avoid brittle failure, and the form and space affected the strengthening effect, and the bearing capacity and ductility of concrete columns reinforced by high ductility polyester fibers increased obviously with the increasing number of fiber layers. The results can provide reference for engineering applications for high ductility of polyester fibers.