STRENGTHENING ONE-WAY SLAB WITH FIBER REINFORCEMENT POLYMER

This study presents a consolidated review of recent advances in the flexural strengthening of one-way reinforced concrete slabs through different fiber-reinforced polymer (FRP) techniques. The review articles were reviewed from 2020 to 2025 and showed the effectiveness of materials such as carbon FRP (CFRP), glass FRP (GFRP), and basalt FRP (BFRP), along with advanced methods such as textile-reinforced mortar (TRM), fiber-reinforced cementitious mortar (FRCM), and high-performance fiber-reinforced concrete composites (HPFRCC). Results consistently show that FRP reinforcement was highly associated with improvement of the load-carrying capacity, stiffness, and ductility of the concrete slabs and with reduction, as well as delayed deflection. Of the techniques studied, CFRP application proved the best for obtaining the maximum improvements in flexural capacity (up to 132% in some cases) followed by BFRP and GFRP systems as per the configuration and bonding procedure. Also, finite element analyses have shown that numerical models predict the structural performance of strengthened slabs. FRP materials, in particular CFRP and BFRP, are efficient, lightweight, and corrosion-resistant options compared to standard steel reinforcements, which make them suitable for modern strengthening and retrofitting applications in civil infrastructure.