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Constropedia
Steel & Rebar

What Is Reinforcement or Rebar

What reinforcement means in construction, why steel rebar has a deformed surface, and the bar types from carbon steel to fibre composites and epoxy-coated bars.

Reinforcement is the process of strengthening or reinforcing some material. In the construction sector, reinforcement generally refers to the material used in concrete to give it higher tensile strength. Reinforcement material can be wood or steel. Steel is the most common material used to reinforce concrete.

Steel as Reinforcement

Concrete is strong under compression, but has weak tensile strength. Rebar (reinforcing bar) significantly increases the tensile strength of the structure. Rebar’s surface is often “deformed” with ribs, lugs or indentations to promote a better bond with the concrete and reduce the risk of slippage.

The most common type of rebar is carbon steel, typically consisting of hot-rolled round bars with deformation patterns. Other readily available types include stainless steel and composite bars made of glass fiber, carbon fiber, or basalt fiber. The steel reinforcing bars may also be coated in an epoxy resin designed to resist the effects of corrosion, especially when used in saltwater environments.

Rebar reference in your pocket Steel BBS Calculator A1 Pro includes rebar size charts by country, a study section on reinforcement fundamentals and quizzes.
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