Study on the compression performance of small eccentric degradation columns strengthened with TRC in a chloride environment

To explore the mechanical properties of small eccentric compression degradation columns strengthened with textile-reinforced concrete (TRC), the effects of using different numbers of textile layers and the degree of corrosion mass loss on the TRC reinforcement were studied. The results showed that compared with non-corroded columns, the brittle characteristics of the electrified corrosion column were more obvious, and the strengthening effect of the TRC was improved. These characteristics provided good resistance to chloride corrosion and restraint effects for strengthening the columns. The bearing capacity of the corroded column increased after being reinforced with a TRC layer. However, as the number of reinforcing layers increased, the increase in the bearing capacity decreased. When the number of TRC reinforcement layers increased to three layers, the damage pattern of the corroded column changed, and the damage position moved from the upper part of the column to the central region of the column. Finally, the ultimate bearing capacities of the small eccentric compression columns strengthened with TRC in dry-wet environments with chloride salt were calculated, and the calculation model was given.