Reinforcing steel is encased in concrete in order to improve the tensile strength of the latter in structures bearing axial or bending loads. The steel is relatively simple and comprises about 99 % iron. The reinforcing-steel products consist of steel meshes with a diameter of 5 mm to 12 mm.
Steel reinforcing will normally last over the life of the concrete structure. It is 100 % recyclable in the event that the structure is demolished.