Rebar, short for reinforcing bar, is a strong steel component used as a tension device to reinforce concrete and is often patterned to bond effectively with the concrete.
Rebar is used mostly for primary and secondary reinforcement. Primary means it is employed to guarantee the resistance needed to support loads required. Secondary reinforcement means it is used mainly for aesthetic reasons to prevent cracks in concrete caused by factors such as temperature changes and shrinkage.
The use of rebar is crucial to many construction projects and below are 5 advantages to using it to make sure a project goes flawlessly.
1. Helps to prevent cracks
As mentioned, rebar plays a pivotal role in providing resistance to prevent cracks in concrete that would be unsightly and potentially deemed unsafe. If concrete is poured and only supported at both ends, the middle will experience significant stress and this is how cracking occurs. By placing rebar in the middle, tension stress is prevented and breaking and cracks will occur significantly less.
By preventing cracks in the concrete, degradation to the concrete and expansion that will cause more serious damage is also prevented. Rebar is an attractive option for its tensile strength as well. Concrete does withstand compression but does not respond well to forms of tension. Adding rebar to the concrete increases its strength, allowing it to shift and still maintain its integrity.
2. Reduces need for thicker concrete
While larger structures often require concrete poured at a larger thickness, some minor projects do not need this but the ability of the concrete to be strong is still crucial. Examples of such projects may be garage floors or driveways where thickness needs to be kept at a minimum.
When rebar is used in these instances, it adds to the strength of the concrete but still allows for reduced thickness. This is important if significant loads will be placed on top of the concrete as it will be able to withstand the compression while still maintaining a thin layer.
3. Long-lasting & strong
Stainless steel rebar has proven to last 5 times longer when compared to galvanized steel and is able to withstand abuse and abrasion during use. Rebar is a preferred option of reinforcement because it bonds extremely well with concrete. The greater the surface of rebar exposed to the concrete, the stronger the bond will be. Rebar pieces are re-useable and can be used time and time again.
When the time comes that it cannot be re-used it can be recycled, melted down, and re-purposed which in turns reduces the environmental impact that steel manufacturing can have.
Steel rebar is useful because of its ability to expand and contract with changing temperatures. Whether it is exposed to heat or cold, concrete will remain structurally sound. The rebar and concrete are compatible because they expand and contract at almost the same rate, guaranteeing a degree of cohesiveness.
This is essential because it means that the rebar will not crack the concrete that surrounds it if it expands more or less than the rebar itself.
5. Saves money
As mentioned, rebar can necessitate thinner concrete slabs in some projects, meaning significant cost savings on materials and supplies. Rebar will provide the concrete in projects the strength it needs to withstand compression and avoid cracks and breaks. This will save a significant amount of time and money on repairs.
The rebar is guaranteed to reduce damage to concrete and as a result removes the need to consider concrete sealant to maintain appearance. Stainless steel rebar corrodes at a very slow rate, reducing the need to replace it on a regular basis.