ABSTRACT
To investigate the effect of strengthened externally wrapped shaped steel reinforcement on the seismic performance of rusted stirrup reinforced concrete columns, eight concrete columns were designed and fabricated, and accelerated rusting was used to obtain six rusted concrete columns. By controlling the stirrup spacing, corrosion rate, and material bonding method, the effect of strengthened externally wrapped shaped steel on the seismic performance improvement under different conditions was investigated. After a low reversed cyclic loading test, it was concluded that the different binders had almost no effect on the seismic performance, that the reinforcement effect was better for specimens with small stirrup spacing than for specimens with large stirrup spacing. The maximum ductility improvement of reinforcement with externally wrapped shaped steel was about 100% and that the energy consumption capacity was about 55% higher. The strengthened with externally wrapped shaped steel is more effective and can provide a reference role for improving the seismic performance of rusted reinforced concrete structures.
