Steel reinforcement refers to the use of steel bars or mesh in concrete structures to enhance their strength and durability. Concrete is strong in compression but weak in tension, so adding steel helps to resist tensile forces, making the structure more resilient to various stresses. Typically, rebar (short for reinforcing bar) is used, which comes in different sizes and grades. The combination of concrete and steel creates a composite material that can withstand heavy loads and environmental factors, making it essential in construction for buildings, bridges, and other infrastructure projects.