Research Information System
MEETCON MESOPOTAMIA II. INTERNATIONAL CONGRESS ON SCIENTIFIC RESEARCH, Mardin, Turkey, 12 - 14 March 2026, pp.41-52, (Full Text)
In the nonlinear analysis of reinforced concrete structures, section analysis serves as a practical tool for the reliable evaluation and interpretation of structural behavior. In this study, a parametric analysis was conducted by utilizing the material properties (concrete and reinforcement bars) obtained from the author’s previous experimental investigation on reinforced concrete columns incorporating natural perlite and conventional aggregates. A total of 32 RC column models were analyzed, incorporating two concrete types (perlite aggregate and conventional), four axial load ratios (10%, 20%, 30%, and 40%), and two reinforcement ratios (ρ = 0.0137 and ρ = 0.01787). For the 300×300 mm cross-section considered in the analysis, the material behaviors of the reinforcement bar, confined concrete, and unconfined concrete were defined and implemented separately in the numerical models. The parameters of yield curvature (Øy), ultimate curvature (Øu), curvature ductility (μØ), maximum moment capacity (Mmax), and energy dissipation capacity (E) were investigated. The results indicate that, for both concrete types, increasing compressive strength and reinforcement diameter enhances moment capacity, whereas curvature ductility and energy dissipation capacity tend to decrease. When the aggregate type is considered, perlite aggregate RC columns exhibit moment capacities comparable to those of conventional concrete specimens, while notable differences are observed in terms of energy dissipation performance.