Rebar Reinforced Concrete
How Does Rebar Work?
Rebar is normally corrugated or roughed. The shape and texture of the steel causes concrete and rebar to form a bond. This bond is important, because steel rebar and concrete share a similar coefficient of thermal expansion and will expand and contract at near the same rate. Once bonded, the rebar adds tensile strength to the concrete, thus allowing the slab to carry varying loads safely.
Just as the rebar provides a benefit to the concrete, so to does the concrete provide a benefit to the rebar. Providing proper depth placement, concrete provides a barrier from corrosion to the encased steel; however too little concrete will let corrosive materials into the slab resulting in corrosion, and too much cover can cause large cracks.
For more information we encourage you to visit some of the other websites listed below. Please note, we do not own or control the content of those sites and thus we cannot assure the information provided by them to be correct or the most up to date; however, we consider them to be excellent resources.
This link provides case studies on the cost effectiveness of wire reinforcement. Additionally, information is provided regarding industry standards and codes.
The CRSI link will take you directly to an oasis of resources regarding rebar and steel standards.