Reinforced concrete is a construction material made by combining concrete with steel reinforcement bars, known as rebar. This combination enhances the strength and durability of concrete, which is naturally strong in compression but weak in tension. The steel bars help resist tensile forces, making the material suitable for various structural applications. This composite material is widely used in buildings, bridges, and other infrastructure due to its ability to withstand heavy loads and resist cracking. The use of reinforced concrete allows for more flexible designs and longer spans, contributing to modern architectural advancements and improved safety in construction.