NEXT-GENERATION HYBRID FRP–CEMENTITIOUS COMPOSITES FOR HIGH-PERFORMANCE SEISMIC STRUCTURES

Abstract

Hybrid Fiber-Reinforced Polymer (FRP)–cementitious composites have emerged as a transformative class of structural materials capable of addressing the growing demand for resilient, durable, and lightweight systems in seismic regions. This study proposes a next-generation hybrid FRP– cementitious composite framework engineered to enhance energy dissipation, ductility, and postearthquake recoverability of critical infrastructure. The system integrates multi-layered FRP laminates with advanced high-performance cementitious materials to create a synergistic composite capable of outperforming conventional reinforced concrete and monolithic FRP systems under cyclic and dynamic loading. A comprehensive experimental program, supported by finite element modeling, evaluates key performance parameters including lateral stiffness retention, hysteretic behavior, interfacial bond strength, and residual deformation capacity. Results indicate that the proposed hybrid composite exhibits significantly improved crack control, enhanced load redistribution, and superior fatigue resistance, enabling sustained structural performance during successive seismic events. Additionally, the lightweight nature and corrosion resistance of FRP components contribute to reduced maintenance costs and extended service life, making the system suitable for both new construction and retrofitting of vulnerable structures. The research further highlights the potential of incorporating nano-modified binders and fiber hybridization techniques to optimize composite behavior across varying seismic intensities. Overall, the study demonstrates that next-generation hybrid FRP–cementitious composites provide a robust and sustainable pathway for improving structural resilience, ensuring rapid post-disaster recovery, and advancing the future of earthquakeresistant civil infrastructure.