Steel Rebar : 6mm—32mm
 
What is Rebar?
Steel reinforcement bars or rebars are used to improve the tensile strength of the concrete, since concrete is very weak in tension, but is strong in compression. Steel is only used as rebar because elongation of steel due to high temperatures (thermal expansion coefficient) nearly equals to that of concrete.
 
Types of Steel Reinforcement Bars
 
Major types of steel bars used in the construction are as follows,
1. Mild Steel Bar
The surface of the mild steel bars are plain and round in shape. They are available in various sizes of 6 mm to 50 mm. They are used in concrete for special purposes, such as dowels at expansion joints, where bars must slide in a metal or paper sleeve, for contraction joints in roads and runways, and for column spirals. They are easy to cut and bend without damage.
 
For structural buildings like bridges and other heavy structures, mild steel bar is not recommended due to no great bonding between concrete and steel, slippage and strength.
 
2. Deformed Steel Bar
Deformed steel bars have ribs, lugs and indentation on the surface of the bar, which reduces the major problem that is faced by mild steel bar due to slippage and good bonding is achieved between concrete and rebar. The tensile properties is higher compared to other rebars. These bars are produced in sections from 6 mm to 50 mm dia.
 
3. Other Types of Rebars
 
Depending upon the type of material used in the production of rebar, different types of rebars are
1. European Rebar
2. Carbon Steel Rebar
3. Epoxy-Coated Rebar
4. Galvanized Rebar
5. Glass-Fiber-Reinforced-Polymer (GFRP)
6. Stainless Steel Rebar