Béton armé, or reinforced concrete, is a construction material that combines concrete with steel reinforcement bars, known as armatures. 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 technique is widely used in various structures, including buildings, bridges, and roads, due to its durability and resistance to environmental factors. The use of béton armé has revolutionized modern construction, enabling the creation of larger and more complex designs while ensuring safety and stability.