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Concrete Cracks Repair

Cracks in a concrete floor can be caused by accidental impacts, deterioration of the affected area, intense use of a reduced area or the movement of the floor itself.

The fact is that a crack is a serious problem in terms of safety, especially when it comes to industrial buildings with storage at height.

A crack can be the consequence of poor planning of joints, ground movements, excessive load on the floor, etc.

However, when a crack appears, there is a risk of deterioration for the floor. Over time, more cracks may appear around the affected area.

Cracks repair is a demanding task that must be carried out efficiently and precisely.

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Cracks in the floor

Cracks in a floor are individual damages, however, this does not exclude the possibility of relation between them.

Repairing of cracks is never easy. They are damages that are not geometrically linear and can develop in different directions. In addition, several cracks can be combined in themselves.

In the case of cracks crossing each other, there is a risk of parts flaking off. This means that pieces of concrete can be detached from the floor, creating a hole and leaving the aggregate of the concrete exposed. In order to avoid these incidences, it is essential to repair cracks as soon as they are detected.

Causes of cracks

It is important to evaluate all possible causes before carrying out repairs of cracks , in order to provide a suitable and long-lasting solution.

Cracks are mainly caused by:

  • Insufficient depth of the concrete to support loads
  • High tension of the slab
  • Reflection of cracks in lower layers
  • Subsoil with low bearing capacity
  • Inadequate drainage
  • Faults in the construction process
  • Absence of adequate fibers

Crack sealing

Repairs of cracks are part of the set of maintenance activities, by means of which surface problems of the concrete floor are solved.

The sealing of cracks consists of milling, cleaning and sealing with adherent filling materials; usually mortars based on polyurethane are used to guarantee a minimum of flexibility of the repaired area.

The sealing of cracks avoids the penetration of water and/or any other external substance into the interior of the concrete, in order to maintain a constant support capacity.

For more information about cracks sealing click on the following link: Maintenance of concrete floors. In addition, in this link you can also deepen in this topic.


This is another minor maintenance task for industrial floors. It’s necessary to repair urgently holes produced by disintegration and with a considerable diameter and depth in the surface.

It basically consists of the renovation of the floor, eliminating loose material and replacing it with one of similar characteristics.

Frequently we find holes that have been repaired during an emergency. These repairs are of a provisional nature, but a lasting solution is often ignored. This entails risks for the use of the concrete floor, as the provisionally repaired area is not stable. Furthermore, although a temporary solution at first glance seems to be a quicker solution, its long-term final cost is much higher.

Safety problems arising from flaking

It is obvious that holes in an industrial floor are much more damaging than cracks. When a heavy vehicle, such as a forklift, travels and stumbles upon a hole, it is not only increasing the degree of deterioration of the hole, it is also compromising both the machinery it drives and the load it carries.

Heavy machinery has certain limitations in terms of damping. As a result, vehicle fleet maintenance costs are likely to rise in the long term.

In addition, heavy machinery needs minimum conditions to operate efficiently. It requires a uniform and smooth industrial floor. If this is not the case, an error can easily lead to an accident. Workers require greater concentration to drive machines on a cracked pavement. Therefore, the less flat a floor is, the greater the risk of an accident.

We conclude that the repair of cracks is of great importance to minimize the risk of material or personal injury during industrial activities.