Table 2: Properties of column specimens.

GroupSpecimen designationUltimate strength concrete (MPa)Axial load (kN)Longitudinal reinforcing ratio (%)Main rebarDimensions (mm)Transverse reinforcement ratio (%)Ties (@mm)

Group 112L-0.24.858.860.754-DB12200 x 3000.07RB6@300
12L-0.63.8176.580.754-DB12200 x 3000.07RB6@300
Group 29L-0.25.458.860.314-RB9200 x 3000.07RB6@300
9L-0.65.0176.580.314-RB9200 x 3000.07RB6@300