Techniques for refining concrete

Under the finishing of concrete are mostly understood machining techniques to make existing concrete surface quality. In the manufacture of concrete with appropriate additives and substances is spoken of tempering. Here you will find out what options there are for refining concrete.

Many concrete finishes to consider already in the planning

Already in the planning is important how a concrete should be designed later. In this way different results, in particular of the concrete surface, can be achieved by the respective processing techniques. Basically, a distinction can be made between coating or abrasive and abrasive finishing techniques:

  • Grind concrete surface (abrasive)
  • Polishing concrete surface (abrasive)
  • Impregnating concrete (applying)
  • Seal concrete (applying)
  • Oil or grow concrete (applying)

Refining concrete through abrasive machining techniques

The grinding and polishing of concrete are usually only work steps that must be carried out one after the other (also depending on the initial condition of the concrete surface). However, not every concrete represents a refinement of the surface. Concrete is also ground to roughen it for other applications.

Different effect depending on the surcharge used

Refining by grinding and polishing concrete is about producing a correspondingly high-quality exposed concrete surface. The effect may vary completely depending on the composition of the concrete. For example, if a very fine aggregate (aggregate) is used to grind and polish, creating a homogeneous surface.

Supplement similar to influence and refine terrazzo floors

However, it is becoming more and more fashionable to choose a coarse aggregate, which is deliberately chosen and used in the color scheme to harmonize with the cement stone accordingly. Cement glue forms from cement and water, which becomes hardened cement during setting, ie hardening of the concrete.

Grinding and polishing is a high effort

Usually, such a concrete surface must be milled before the actual grinding. The effort is correspondingly high due to the enormous strength of concrete. But the effort is worth it. Gladly sanded and polished concrete floors are compared with an equally polished aggregate with terrazzo floors.

Enriching the fresh concrete with color pigments

The concrete can also be tempered elsewhere during manufacture. This allows you to add color pigments to the concrete, thus creating a further contrast in color. With conventional hand grinders, however, you will not achieve even nearly satisfactory results. To refine a concrete by grinding and polishing, large disc sanders must be used.

Refining concrete by applying machining techniques

The selection of building materials and products that you can apply to concrete is enormous. The offer ranges from concrete impregnation to sealing to concrete oiling or waxing. When sealing, products that are transparent or colored can also be used.

Refine seals to the concrete

Seals range from the transparent lacquer seal to the liquid plastic, which you can mix with different colors. Also important in this form of finishing slip resistance and abrasion resistance.

Oils and waxes for a particularly smooth, warm concrete surface

Oils and waxes go in the direction of impregnations as they move into the concrete. While in functional components such as walls or pillars an impregnation usually represents a pure protective function. Above all, the oiling of exposed concrete is a design measure. Depending on the concrete, the surface gets a velvety metallic blue-gray shimmering surface. Often, performing such concrete refinements requires sanding and polishing the concrete surface.

Tips & Tricks

In addition to the possibilities mentioned for refining the composite construction material, there are many other techniques for processing concrete. Follow the link and get more information.

Video Board: Concrete sweeper Lexie