Cyclic Behavior of Fiber-Reinforced Rubberized Concrete Beam-Column Joints
Volume Title: ICASGE2025
Paper ID : 1074-ICASGE-FULL
Authors
Structural Engineering Department, Faculty of Engineering, Tanta University, Tanta, Egypt
Abstract
The cyclic behavior of beam-column joints (BCJs) is a critical factor in the structural performance of reinforced concrete (RC) structures. This study investigates the response of fiber-reinforced (F) rubberized concrete (RuC) beam-column joints (FRuC-BCJ) under cyclic loading by analyzing and validating experimental data from existing research through finite element modeling (FEM). The study evaluates key performance parameters, including load-carrying capacity, stiffness degradation, energy dissipation, and ductility, focusing on the impact of incorporating rubber aggregates and fiber reinforcement into concrete joints. The results show that rubber aggregates significantly enhance energy absorption and deformation capacity, while fiber reinforcement improves crack resistance and mitigates brittleness, leading to a more ductile failure mode. However, the inclusion of rubber aggregates reduces compressive and tensile strengths, with fiber reinforcement partially compensating for these losses. Under cyclic loading, the synergy between rubber aggregates and fibers results in improved energy dissipation and reduced stiffness degradation. This research validates the potential of fiber-reinforced rubberized concrete (FRuC) as a sustainable material for applications requiring enhanced cyclic load performance.
Keywords
Beam-column joints; reinforced concrete; Fiber-Reinforced; Rubberized concrete; Energy dissipation; Ductility; Cyclic Load
Subjects