Abstract:
The strength and stability of reinforced concrete (RC) columns play a crucial role in ensuring the safety and durability of structures. This study investigates the effect of different rebar joint methods on the axial load capacity of RC columns, with a particular focus on lapping, welding, and mechanical couplers. The research aims to determine the most effective joint technique in terms of structural performance and ease of construction. A comparative analysis was conducted by testing concrete cylinders and columns reinforced with varying rebar joint configurations. Experimental results indicate significant variations in load-bearing capacity among the different joint methods. The findings highlight that the choice of rebar joint affects the overall strength of the column. The experimental results showed that the welded joint column achieved the highest compressive strength, followed closely by the lapped joint column, while the coupler joint column demonstrated the lowest strength. Cylinder tests reflected a similar trend, with the welded and lapped joint columns outperforming the coupler joint column in average strength. These findings indicate that the type of rebar joint significantly influences the axial load capacity of reinforced concrete columns. By providing a systematic evaluation of rebar joint effectiveness, this research offers valuable insights for engineers, designers, and construction professionals. The conclusions drawn from this study contribute to the optimization of reinforced concrete structures, ensuring safer and more resilient buildings.
