Can concrete be repaired?

Concrete structures are an important component of our infrastructure, they are used to build houses, bridges, roads and other structures. However, over time, these structures may begin to collapse, which can be dangerous for people and property.

One of the main reasons for the destruction of concrete structures is the corrosion of reinforcement. The reinforcement, usually consisting of steel rods, is protected from corrosion due to a special protective layer of concrete. However, if this layer cracks or is damaged, the reinforcement becomes vulnerable. As a result, the entire reinforced concrete structure begins to collapse, which means it becomes less and less safe to operate. Today we will talk about when it's time and how concrete can be repaired. 

How to understand that it's time to repair concreteVisual inspection: Check the concrete structure for cracks, roughness or irregularities.

• If you notice significant damage, such as deep cracks or large pieces, then this may mean that the structure needs repair. If fittings appear from under the screed, it is worth urgently buying a mixture for repair and carrying out repair work. 
• Sound test: Tap the concrete surface with a hammer or other hard object and evaluate the sound. If the sound is muffled, then this may indicate the presence of air voids or damage inside the concrete.
• Color change: If the color of the concrete changes or stains appear, this may indicate the penetration of water or other materials that can damage the structure.
• Surface shedding: If the concrete surface begins to crumble, this may indicate problems with the quality of the material or improper installation. Shedding can also be a sign that the structure is being subjected to too much vibration or exposure to the environment, for example, in areas with high levels of pollution.
• Uneven surface: If the concrete surface has become uneven or there are more irregularities, this may indicate problems with uneven laying or deformations. An uneven surface can lead to damage to objects on it or to problems with water drainage.
   

How to repair concrete Various mixtures are used to repair concrete, depending on the characteristics and requirements for the object being repaired.

Some of the most common mixtures are:

• Cement-based repair mix: This is one of the most popular mixes for repairing concrete surfaces. It consists of cement, sand, additives to increase strength and durability. This includes self-leveling, self-leveling, as well as reinforced reinforced mixtures. An example is the Teknoself 500 liquid mixture, which is suitable for indoor and outdoor work. 
• Hydraulic seals and sealants, which are advisable to use in case of concrete destruction by water exposure, the formation of leaks. These are special compositions that include cement and a number of active chemical additives, they provide fast setting of the material to eliminate active leaks. High-quality seals include products of the Teknoplug series.