Typical strengthening systems for reinforced concrete structures are based on the use of organic matrices and carbon or glass fibers. In this book a new type of strengthening system is investigated and proposed. The system consists of high strength steel fiber tapes impregnated by a fireproof inorganic matrix. This retrofit system was used successfully to strengthen reinforced concrete beams.The results indicate that the failure of the strengthened beams was driven by yielding of the steel reinforcement in the tension face of the beams, followed by a local slippage of the steel cords from the...