Steel reinforcing bars, commonly known as rebar, are used in a wide variety of construction and engineering projects. Rebar is used to provide strength and stability to concrete and masonry structures, and for reinforcing bridges, buildings, sidewalks and roads.
Rebar is composed of carbon steel, and is available in both plain and deformed varieties. Plain steel reinforcing bars have smooth surfaces, while deformed bars have a ribbed and corrugated surface. The ribbed and corrugated surface of the deformed bars increases the bond strength between the steel and the concrete, resulting in increased strength and stability of the structure.
Rebar is available in several different grades, each with a specific purpose. Grade 60 rebar, the most commonly used grade in North America, is used for general purpose construction applications and is the most common type of rebar used in the United States and Canada. Grade 75 is used to denote higher strength rebar for projects that require greater levels of strength and stiffness than Grade 60 provides. Grade 100 is even stronger and is used in projects that require maximum strength and stiffness.
Rebar is measured in terms of diameter and length. The most common sizes of rebar used in North American construction include 1/2 inch, 3/8 inch, 5/8 inch and 3/4inch diameters. Rebar is measured in feet and inches, and is typically cut to specific sizes and shapes for use onsite.
Rebar can be bent, cut and welded, to fit the structural requirements of the project. Protective coating is applied to the steel in order to protect it from corrosion and extend its service life. Common coatings used on rebar include epoxy, plastic and zinc. Rebar with plastic coating is more commonly used in projects where the rebar will be exposed to wet conditions and extreme temperatures, as the plastic coating helps to protect against corrosion and rusting. Zinc-coated rebar is often used in underwater applications, as it is more resistant to corrosion and other damage.
Rebar is an essential component in many construction and engineering projects, providing strength and stability to concrete and masonry structures. It is available in different grades, sizes and coatings in order to meet the specific requirements of any project.
