References

Within the framework of works preparing the conversion of a former funeral home into a cultural facility, TERRASOL supervised works of filling injections into anteludian gypsum dissolution cavities over the entire site.

Over two injection phases, 447 drillings (50 to 60 m deep) were performed and the injections reached a volume of more than 10,000 m3 of grout.

Supervision of volumes and materials:
TERRASOL ensured continuous and regular supervision, based on daily reports, for:

• injected volumes,
• quantities of grout produced,
• quantities of grout injected,
• materials dosing (water, fine sand, cement, bentonite).

TERRASOL established correlations between:

• the daily report of the plant and the delivery notes, in order to check the dosing compliance,
• between quantities forecasts (from the contract specifications) and quantities actually injected, in order to follow-up the reinforcement conditions and to be able to adjust them.

Monitoring of the injection grout quality:
To carry out this control, regular checks were performed on:

• grout injection quality, by testing methods (density, viscosity, decantation, resistance to compression),
• flow rate of injection pumps and automatic weighing by the calibration plant (control carried out by a specialised contractor).