Wieso wird bei Straßenbau eine Abdeckung gelegt?

Hallo Zusammen,

hier wird gerade die Straße erneuert und es wurde eine Abdeckung auf die Erde gelegt. Das habe ich sonst nie gesehen. Normalerweise würde man die Erde bedecken un zu vermeiden, dass Sonnenlicht Gras wachsen lässt. Aber, bei Straßen dachte ich mit den ganzen Schichten kommt nix durch.

Weiß jemand ob es einen anderen Grund geben könnte?

Danke im Voraus.

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Bonye
2 months ago

In most road structures in classified road construction, a frost-protection layer, gravel or gravel-bearing layer is installed directly above the Earth Planum. In order to ensure long-term reliability (deformation module EV2) required after RStO, mixing and/or breaking through the applied bulk with/in the substrate must be prevented. The mechanically solidified Secutex® nonwovens made from polypropylene are used. Secutex® nonwovens meet the requirements necessary to achieve the separation and filter stability. In addition, they also resist rough installation conditions and adapt excellently due to their high stretching capacity of an uneven substrate.

https://www.naue.com/de/loesungen/strassenbau-und-tiefbau/classifieder-strassenbau/

Lukas1404
2 months ago

Probably that nothing gets wet in rainfall

Hoegaard
2 months ago
Reply to  Lukas1404

So it doesn’t get wet under the road when it rains?

Lukas1404
2 months ago
Reply to  Hoegaard

To the built. When it’s fresh

peterobm
2 months ago

the foil must have another reason. any covers. I’m still missing something for the load capacity.

JayCeD
2 months ago

This could be a so-called geotextile. There are various reasons why this is being used. In this case probably as a separating layer. If, for example, a gravel substructure for asphalt or plaster is installed, it is possible to remove it cleanly in the future without the material being mixed with the soil below it.

At least in theory. In practice, the flow only ensures higher disposal costs if the road becomes the next time again. Because you will probably build a soil-scotter-geotextiel mixture. This then becomes quite expensive in disposal.

peterobm
2 months ago
Reply to  JayCeD

I thought, too, but for that, the substructure is not sufficiently deep and also vague.

Nobbe54
2 months ago

Thus, the material applied would not be weaved by rainwater or the wind. 1

Hoegaard
2 months ago

Prevent root eruptions or at least delay