None of the types of repairs can do without preparatory work. Their complexity and duration are determined by a number of factors. First of all, it is the quality of building materials, as well as the quality of the planned finish. Preparatory work includes, as a rule, the purification of concrete from moisture, snow, ice, from extraneous inclusions, blowing or washing, elimination of raids or rusts, etc. D. If the repair of concrete buildings is planned to be carried out in the winter, then, in addition to the listed operations, a set of additional work may be required, which are associated with preliminary, as well as subsequent heating concrete structures.
One of the most important preparatory steps is the processing of the surface of the repaired concrete. It is carried out so that the surface is strong, should not be covered with dust, should not have spots of oil.
Sandbrown processing is one of the most optimal and effective options for processing large concrete areas. Small areas are usually treated with 20-25% — saline acid solution, and then rinse with water.
As it turns out, the repair of concrete surfaces involves the preparatory stage, the course of which determines further repair work: their terms and possible difficulties.
