... deformed bar, reo, or reo bar, is a common steel bar, and is commonly used as a tensioning ... use of the high compressive strength of concrete.Common rebar is made of unfinished tempered steel, making ... known as oxide jacking. This is a particular problem where the concrete is exposed to salt water, ... forms, from spirals for reinforcing columns, to the common rod, to meshes and many other forms. Most ...