WATERPROOFING OF CONCRETE BY LINER
Rotational molding • Installation on slab – Above ground

IMPLEMENTATION
The plates are assembled using breakable profiles. The latter make it possible to maintain the spacing of the plates and to limit the presence of laitance to the right of the weld.
After stripping, the tear-off part of the breakable profile is removed. The plates are then welded to the extrusion.
The holes in the form spacers are also plugged with extruded HDPE pellets.
A plucked grid, made with “i” profiles, ensures the flatness of the raft and serves as a support for the installation of the plates. Concrete is poured between the pickings.

NEW WORKS
INSTALLATION BY PREFABRICATED ELEMENTS:

The prefabricated elements make it possible to reduce or even eliminate welding on site.
The photos below show the different setups of an 11 x 1.50 x 2 m high unloading tank, equipped with a sump (Fig. 35). This work was
totally prefabricated in a boilermaking workshop.
After having earthed, the reinforcement is placed, then the concrete slab is poured (Fig. 36). The prefabricated Ultra-GRIP element is ready to be positioned in its
location (Fig. 37). We lock the sails (Figs. 38 and 39), then we sink the walls (Fig. 40).
This unloading tank (Fig. 41) was thus installed without any welding on site.
In industry, the downtime being limited, this technique allows rapid and reliable implementation, whereas traditional solutions (resins, etc.)
must be applied to concrete with 28 days of setting and under controlled humidity.