Repair of concrete columns

In private construction, it is quite common to resort to concreting columns with their own hands. And also, they often encounter defects that appeared during their installation.

Consequently, the question arises:       How and with what help can a concrete column be repaired quickly and easily?  The answer to this question will be this article.

To begin with, let's briefly analyze what a column is and why is it needed at all?

Such an architectural solution as a column was first used back in 2650 BC and has been successfully used to this day.

The column performs two main functions:

The function of a load-bearing element of structures that provides buildings with vertical rigidity. It is intended for the construction of frames of buildings and premises for industrial and administrative, residential and household purposes.

The column also performs a decorative function and is able to give a highlight to the facade of the building and its interior.

The columns come in different shapes: round, square, rectangular or shaped, with a cross section. 
And depending on the manufacturing method, the columns are divided into two types:

  • Monolithic - completely manufactured at the construction site, by pouring concrete into reinforced molds.
  • Prefabricated is when the structure is manufactured at the factory, and then transformed and installed at the construction site.

Each method has its advantages and disadvantages. Of the general ones, these are defects that appear during the installation of concrete columns and during their operation.

TEKNO company is constantly conducting research and has developed a special series of Teknorep products - thixotropic non-shrink repair mixtures for vertical surfaces.

Tekorep 200            

Tekorep 300         

Tekorep 300 EX

And so let's consider two degrees of repair, the main types of defects and ways to eliminate them!

 

Structural repair of columns (defects with a thickness of 10 to 40 mm). It implies carrying out work to restore the strength characteristics and bearing capacities of the structure.

Chips, potholes, cracks, surface repairs after removing the formwork, the cavities are cleared, the loose concrete is completely removed, then cleaned of dust, oil, dirt, rust, mold, lubricants and waste. They are primed and rubbed with Teknorep 300 solution. When repairing a site exposed to constant exposure to harsh environmental conditions, and even those areas that come into contact with seawater (photo of the bridge support column), a high-strength Teknorep 300 EX solution should be used.

 

Important!!! Corrosion protection of fittings is mandatory and is performed before laying repair materials. To do this, use the Tekno AD corrosion inhibitor.

 

Cosmetic repairs (surface defects from 3 to 30 mm thick)

Peeling of the concrete surface, the appearance of microcracks, gravelly surface, small shells - the surface must be prepared for application, free of dust, oil, dirt, rust, mold, lubricants and waste, pre-primed, then leveled with Teknorep 200 solution.