This paper presents an experimetal study on RC beam strengthened with 3D Ultra-High-Mocular-Weight-Polyethylene (UHMWPE) fabric. This research program aims at developing the 3D UHMWPE textile fabic to improve the structural performance of RC beam. Specimens were constructed and experimentally investigated through static tests. Testing data were analyzed to investigate the performance of the specimens retrofitted or strengthened with UHMWPE fiber compared to the non-retrofitted RC beam responses. It was concluded that the strengthening method using 3D UHMWPE fiber can improve the performance of RC beam.

In this study, we classified the structures into minor-damage column (URM), moderate-damage column (URO), and severe-damage column (URS), depending on the RC column of damage degree, and reinforced columns with the UHMWPE fiber in order to perform modeling of the structures. Then, we executed a comparative analysis with the results obtained from previous studies of NRF (non-reinforced column) and URF (column with UHMWPE fiber reinforcement). The maximum strength was increased with 14.91% of URF, 14.05% of URM, 14% of URO, and 6.5% of URS on the basis of NRF and the columns with minor and moderate damages exhibited the similar stiffness as that of the URF.