RGA: Solutions to combat shrinkage and swelling of clays

How to manage RGA issues?

Several techniques can be used to limit the harmful effects of clay shrinkage and swelling on constructions.

In the fight against this phenomenon, a mandatory certification to be provided when declaring completion of work has been in place since the Order of December 21, 2023.

Among the key elements of this certification it is interesting to note the highlighting of:

• Considering drainage
• Waterproofing foundations with the installation of a membrane
• The use of buried tubes and fittings with flexible joints

ATE solutions to combat the hazards linked to the shrinkage and swelling of clays

ATE offers a complete solution to effectively combat these RGA hazards:

• A waterproofing membrane BATIPROTEK RGA helps protect foundations from water evaporation and limits ground movement.
• A flat-bottomed, effective and recognized gravel-free drainage system BATIFIBER : placed away from buildings, it drains excess water and reduces pressure on the foundations.
• A reinforced joint drainage system SANCOL in order to guarantee the watertightness of the buried drainage network.

Why are these solutions effective?

Stabilized humidity around the construction limits the expansion and contraction of clays.

The shrinkage-swelling of clays is therefore a phenomenon to be taken seriously.

By adopting a global approach combining these different strategies, it is possible to effectively combat RGA and guarantee the durability of structures in areas subject to this geotechnical phenomenon.

Each project must be approached in a unique way, taking into account the specific characteristics of the soil and the region. In this matter, it is always advisable to call upon a specialist who is an expert in this field, and it is recommended to carefully analyze the characteristics of the soil.

Watch the ATE chantier video: RGA - How to protect a construction on soils sensitive to shrinkage-swelling?