Effect of Lateral Reinforcement Densification on the Axial Load Capacity of Reinforced Concrete Columns

Document Type : Original Article


1 civil engineering department , faculty of engineering of shebin el kom, menofia university

2 Civil Engineering Dpt, Faculty of Engineering, Shebien el Kom, Menoufeya, Egypt

3 Civil Engineering Department, Faculty of Engineering of Shebin El kom, Menoufia University


The major reason for confining concrete columns is to avoid lateral expansion caused by the influence of Poisson's effect. The stirrups are used to resist the longitudinal bar's buckling and the effects of tensile stresses. This paper studies the effect of densification of stirrups in tied R.C. columns. To achieve this goal, two groups consisting of 14 specimens with different cross sections and different densifications of stirrups were tested under static axial loads. Group (A) consists of seven specimens with a cross section of 200x200 mm and a height of 1200 mm, and group (B) consists of seven specimens with a circular cross section with a diameter of 200 mm. The results indicated that increasing the ratio of stirrups' densification increases failure load and improves column behavior, also increasing the ratio of stirrups' densification enhances ductility. Stirrups' densification throughout the column's length is more effective than stirrups densification at the top and bottom. Increasing the percentage of stirrups' densification height at the top and bottom of the column leads to increasing the capacity of the column, and at the same time, it is more economical than increasing the dimensions of the column or increasing the main reinforcement.


Volume 47, Issue 1
(issued on 1/1/2024 in 6 Parts: Part (1) Electrical Engineering, Part (2) Mechanical Engineering, Part (3): Production Engineering, Part (4): Civil Engineering, Part (5) Architectural Engineering, Part (6) Basic Engineering Sciences)
January 2024
Pages 53-64