Why does the top layer of concrete peel off

Concrete is one of the most popular building materials in the world due to its strength, resistance to various influences and durability. Concrete structures are used in various fields, ranging from home construction to the construction of high-rise buildings and bridges. However, like any other material, concrete has its drawbacks, one of which is the peeling of the top layer. Today we will look into the causes of this phenomenon and talk about methods of solving the problem.

Causes of peeling of the top layer of concrete

Peeling of the top layer of concrete can occur for many reasons. The most common of them are:

• Incorrect ratio of components in the preparation of concrete: too much water and not enough cement can lead to peeling of the top layer.
• Insufficient density of concrete. If the concrete has not been sufficiently compacted, the top layer may peel off.
• Insufficient hydration. Too dry composition can lead to peeling of the top layer.
• The absence of protective coatings, such as special varnishes or hardeners, can lead to damage to the top layer.
• High loads in the first days after pouring. 

What to do so that the top layer of concrete does not peel off

There are several methods that help to avoid peeling off the top layer of concrete. Experts refer to the most effective of them: 

• Properly prepare the surface before pouring. It is important that the surface is clean of dust, dirt and debris, and also has a certain roughness to ensure good adhesion between the concrete and the plane. To do this, rinse the surface with water and let it dry.
• Use special additives. For example, plasticizers based on naphthalene sulfate, which improve adhesion and protect the surface from various influences. Such substances include the additive Teknoflow Super. 
• Apply sealing rollers and cedars. This allows you to eliminate voids and ensure a good connection between the layers of concrete.
• Ensure proper care after pouring. It is necessary to make sure that the surface remains moist during the first day after pouring, to prevent rapid evaporation of moisture and the formation of cracks. In addition, the surface should be protected from exposure to sunlight and adverse weather conditions.

Conclusion

Peeling of the top layer of concrete is a serious problem that can lead to the destruction of the structure and deterioration of its appearance. To avoid peeling off the top layer of concrete, it is necessary to properly prepare the surface before pouring, use special additives, apply sealing rollers and cedars, and also ensure proper care after pouring. All this will allow you to create a strong and durable structure that will last for many years.