The SAFE CLAY®  procedure is used particularly to treat pathologies relating to damage caused by the differential settlement of paving and structures built on soil that is sensitive to hydric variation (Dryness).  

It involves limiting the impact on clayey ground of drying and rehydrating phenomena. To do this, our solution also makes it possible to reduce the soil’s permeability and natural water content.

During injections, cracks are filled with expanding polyurethane foam.

This phenomenon participates in the reduction of the permeability of the ground and its water content through densification.

Particular characteristics of the types of soil treated

First, we are dealing with a milieu made up of  clays or limes that are sensitive to hydric variation : drying and humidification phenomena.

In particular, during the drying phase, the soil undergoes a shrinkage phenomenon that causes the appearance of cracks over a certain depth depending on the intensity and duration of the dry spell. In the context of the SAFE CLAY®  solution, the injection causes deformations in the ground  in accordance with its characteristics:

- Reversible deformation without displacement of the soil (impregnation injection)

- Irreversible deformation with displacement of the soil but without soil breakdown.

The injection techniques used by SOLINJECTION prevent all breakdown or hydrofracturing types of deformation.


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