How to repair cracks in concrete? The 3 most reliable methods!

Concrete - quite strong and durable construction material. But under the influence of certain factors and loads, even on concrete, cracks or chips. They can lead to unpleasant consequences, therefore it is recommended to eliminate them as soon as possible. I will tell you how to do this in this article.

Before fixing a problem, you need to find the cause of its occurrence. Deformation of concrete occurs for the following reasons:

• Poor construction fill
• Temperature drops
• Shrinkage processes
• Heaving soil
• Poor quality reinforcement
• Reinforcement corrosion
• Exposure to salts and sulfates
• Mechanical stress

there is cracksthat are safe. it horizontal cracks with a little disclosure. Its width should not exceed certain indicators. When in an aggressive environment - no more than 0.2-0.3 mm. When outdoors and exposed to weather conditions (cold, moisture, ultraviolet radiation) - no more than 0.4 mm.

Various compounds are used to seal cracks in concrete -

epoxy resin, cement-concrete mixture, water glass, sealants, self-expanding cords. The composition is selected based on the width and location of the cracks, whether the concrete is frozen and whether the cracks are spreading further.

In order to seal horizontal cracks in concrete, you can use almost every building compound. For vertical cracks, thicker mixes or self-expanding cords are best. In addition to a suitable mixture, you need to choose the right way to seal cracks.

The most common and effective are the following:

1. Injection. For this, holes are drilled in the direction of the crack and under pressure they are filled with special compositions of sand-concrete mixture, epoxy resin or water glass. Coupling occurs and the crack does not spread further.

2. Shotcrete. This is a rather laborious process. Cracks are sealed with a special composition of sand-concrete mixture with additives of polymers (resin, bitumen, latex), an additional concrete layer is sprayed.

3. Sealing. Filling the crack with a special sand-concrete composition with the addition of polymers to increase the adhesion of the base surface and the repair mixture and covering with a sealant.

These methods are produced using specialized construction equipment. Without it, it will not be possible to repair cracks with these methods.

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