Rubberised Engineered Cementitious Composite (R-ECC) As Retrofitting Material for Reinforced Concrete Beam-Column Joint Subjected to Cyclic Loading

Earthquakes present significant risks to infrastructure and human safety, highlighting the need for effective disaster mitigation strategies. This study explores the utilization of scrap rubber tires as a partial replacement for aggregate in concrete. The primary objective is to analyze the load-displacement behavior and structural performance of RC beams before and after retrofitting with Rubberized Engineered Cementitious Composite (R-ECC) under fatigue loading. The testing procedure included static and fatigue load assessments using a four-point bending test. The retrofitting process incorporated 5% R-ECC. Findings indicate that R-ECC retrofitting improves concrete's ductility, load-displacement response, and flexural fatigue strength, resulting in greater displacement capacity and increased deformation before failure.