The use of fiber-reinforced polymer bars or polymer-coated or uncoated carbon fiber meshs in new reinforced concrete structural elements offers numerous advantages, such as reducing corrosion damage, improving fire resistance (in the case of uncoated fibers), and decreasing the amount of confinement reinforcement required in columns. Ongoing research conducted by Prof. Rami Eid on the use of these materials also for strengthening existing reinforced concrete elements presents innovative solutions, which are being examined both experimentally and through the development of appropriate analytical models.