Reinforced concrete is a construction material made by combining concrete with steel reinforcement bars, known as rebar. This combination enhances the tensile strength of concrete, which is naturally strong in compression but weak in tension. The steel bars are embedded within the concrete before it sets, allowing the two materials to work together effectively. This composite material is widely used in various structures, including buildings, bridges, and roads, due to its durability and resistance to environmental factors. The use of reinforced concrete helps to create safer and more resilient structures, making it a fundamental element in modern construction practices.