Rebar, or steel reinforcing, as it is also known, is a critical component when building concrete structures, as the steel reinforcement gives the concrete essential tensile strength, and there are different types of rebar. Steel is used for several reasons; firstly, steel is strong, and perhaps more importantly, steel expands at roughly the same ratio as concrete, which is ideal, as this does not compromise the strength.
In this article, we will take a detailed look at the various ways that rebar is used in modern construction.
- Thermo-Mechanically Treated Rebar – Known as TMT rebar, this is used for very high strength reinforcement, especially with high-rise skyscrapers. The rebar can be of various diameter, obviously, the larger the size, the more strength in the concrete, making the concrete structure earthquake-proof. The rebar would have very specific specification, making it suitable for certain conditions and stress loads, and on large projects, the engineers decide on the size and specs of the rebar used.
- High-Strength Deformed Rebar – HSD rebar is commonly used in the construction sector, with diameters from 4-50mm, while the rebar does not lose strength when bending, which is often required. This is the most common form of steel rebar, however, this rebar is not recommended for regions that experience earthquakes, which would use TMT rebar.
- Steel Re-enforcement Mesh – If you are based in Australia, check out the affordable products like Best Bar reinforcing mesh from an established rebar supplier, and they have many different types and sizes, so you can order the exact specification for your project. If you need rebar for a project, search online for a local supplier and you can order online, and they will deliver to your site. Mesh is commonly used for patios and driveways and in walls and there are many different sizes, plus the mesh can be cut to size and laid in place prior to the pouring of the concrete.
Steel rebar is ribbed, which improves the bonding ability with concrete, and when the rebar is milled and comes out, it is rapidly cooled, which makes the rebar stronger. There are many different shapes with ribbed rebar, as some offer better bonding properties than others, and the structural engineer would be the person to make the decision regarding which rebar to use.
This form of rebar does not have the same strength as ribbed rebar, and as the rebar is not contoured in any way, it does not bond with the concrete to the same specifications. Its use is minimal when compared to regular ribbed rebar, and most projects would call for ribbed reinforcement, as it offers higher tensile strength.
Whatever type of rebar your project requires, there are local suppliers and with a Google search, you can order, or discuss your requirements with a staff member. Once you know what you need, you can order and the steel reinforcement will be delivered to your site and your project can continue.