Types Of Concrete Joints and Concrete Joint Materials Explained

What is the primary difference between contraction joints and joints provided for expansion of the concrete? The biggest difference is that the former can be placed in such a position where it is not visible to the naked eye and yet the crack will exist. On the other hand, it is very difficult to conceal the latter.

This is because trying to hide the contraction joint or construction joint under another structure is always a feasible option. The joint is nothing but a specific weak spot that has been created just for the purpose of generation of cracks. Rather than letting the concrete crack at any place, the entire structure is weakened at a specific spot which will then crack.

By making use of the space where the concrete slab hides under another slab or another structure, it is possible to keep the cracks out of sight without any difficulty. However, this is not possible in case of an expansion joint because the concrete will expand and will exert pressure against the other structure as well.

This means that not only will you risk having the slab cracking due to the pressure; you will also face the risk of the other structure also cracking. In such a scenario, the smartest option is to place the crack where it ought to be placed and cover the same with the help of the right material. This is the best way to prevent unnecessary damage to the concrete.

You have the option of making use of those absorbent materials that can be easily concealed. If you make use of wood, you have the option of using paints as well as other similar substances to completely hide the fact that the joint has been prepared.

In any case, there are numerous instances where the presence of the joint has been utilized to improve the aesthetics. When you see large tile shaped designs on the concrete slab, you will quickly realize that there was no reason for these designs to be made except for the fact that it helped prevent the cracking of the concrete due to expansion of the same.

Considering the large number of resources available on the internet and the numerous professional service providers present in this field, you should not have any difficulty in placing the expansion joint in the right spot to hide the problem without any difficulty. However, sweeping it under the carpet or another slab of concrete is certainly not the right solution.