News

Materials for concrete repair

Concrete is the main material in the construction of load—bearing structures of buildings and structures. Its integrity and strength is the main factor in the reliability of the entire structure of the building.
Concrete is one of the most durable materials. Despite this, cracks, chips and other damages appear in it, resulting from the absence or improper implementation of waterproofing.

The reasons for this may be:Subsidence of soils

Incorrect design of structures
Absence of shrinkage, temperature and deformation seams
Incorrectly selected materials for sealing joints
Incorrect preparation of the concrete mixture. A common mistake is that the proportions of sand and cement are incorrectly maintained. Also, the reason may be an unsuitable brand of cement and incorrect kneading technology.

Corrosion of concrete. Can be caused by:bacteria and fungi that settle on the surface of building structures and penetrate the capillary-porous structure of concrete, thereby destroying it

the influence of weather factors and improper care. After laying, it was not soaked and allowed to overheat, dry out or freeze over
chemical effects of substances that are in the composition of concrete and in the environment with which it interacts

Concrete is subject to destruction even with the observance of manufacturing technology and proper care. The reason for this may be a strong impact, a heavy load on the concrete product and the harmful effects of the environment (gases, acid rain, sea water, etc.).

Signs of concrete destruction: peeling surface — occurs when the concrete is improperly prepared and the concrete is dried

cracks and crevices — appear from excess loads on the structure and shrinkage of concrete at an early stage of its hardening
biocorrosion of concrete — damage by fungi, mold, algae
rust strips are a consequence of reinforcement corrosion

Elimination of defectsNow the market offers a wide range of materials and tools to combat various damages of concrete.

The choice of means depends on the features of the concrete structure and the type of damage.
When starting work to eliminate defects on the concrete surface, first of all, it is necessary to determine and eliminate the cause of their occurrence. Fragile layers of concrete must be removed with a hammer, hammer, etc.
Then the surface to be repaired should be treated with Tekno repair compounds. If defects have formed on vertical concrete structures, Teknorep 300 and Teknorep 300EX repair compounds are used to eliminate them, and Teknogrout EX and Teknogrout 350 repair non—shrinkable mixtures are used for horizontal surfaces.
If there are water leaks in the concrete that appear through the cracks, it is necessary to use a Teknoplug hydraulic seal.