Concrete is used to build everything from curbs to tall buildings. It’s strong, durable and quite easy to work with on its own. However, when it comes to building large structures such as skyscrapers, concrete slabs are going to need some reinforcement to truly achieve the required durability. That’s where rebar comes in.
Rebar is the shortened name given to reinforcing bars. There are many different types of rebar available today including stainless steel, carbon steel, galvanized, epoxy-coated…etc. each with their own unique characteristics and strength. For instance, stainless steel rebar are extremely resistant to corrosion while European rebar are much easier to work with.
In this article, we’re going to look at why exactly rebar is used in concrete:
To Improve Strength
While concrete by itself is quite strong, it doesn’t have the tensile strength necessary to support tall and elaborate structures. In most cases, concrete beams are only supported at the two ends. If a large-enough force is exerted on the middle, the beam can crack.
In contrast, if the concrete is poured over rebar, these can absorb the applied stress and thereby increase the overall tensile strength of the beam.
To reduce the amount of Thickness required
The thicker is the concrete slab, the greater the amount of pressure that it can withstand. However thicker concrete slabs may not be ideal for the aesthetic a contractor is going for and can add to the cost of construction. By adding, rebar you can increase the strength of concrete slabs without having to make them thick.
To Allow Flexibility in Design
If the particular construction project requires some unorthodox design elements such as curved or twisted structures, then the use of rebar is a must. Despite being incredibly strong, rebar can be bent in order to provide reinforcement to concrete slabs that have shaped in atypical ways. Rebar bending can be a lengthy process if done manually. Hence, contractors will fare better by using an Italian made quality rebar bender to speed things up.
To Prevent Cracking
The thing about concrete is that it has brittle properties, making it quite prone to cracking. Cracking messes with the integrity of the concrete slab and makes it weaker. This isn’t something that you ever want to deal with constructing large structures as it puts everyone inside of it in danger. Rebar can prevent cracking by absorbing all of the tension that is applied on the slab.
Reduces the Cost of Construction
Concrete is quite expensive to work with. Both the mixing and pouring process require heavy machinery and take a lot of time, which can inevitably reduce the cost-effectiveness of the construction. In addition to this, if you also need to produce thicker slabs, it can run up costs really high. As mentioned above, rebar prevents the need to pour thicker slabs.
In addition, cracking can increase the cost of upkeep and maintenance. Rebar can reduce these recurring expenses by keeping the slabs as healthy as possible. As you can see, rebar is quite irreplaceable when it comes to improving the strength and durability of concrete.