Soil-cement columns built by erosion
Whether it’s a dam and its watertightness, a tunnel and its consolidation, or the securing of quarries, Soletanche Bachy masters the entire range of injections to meet your needs.
Grouting into a soil or around a structure makes it possible to render soil impermeable and/or fully consolidated by filling its voids with a pumpable product (grout) that subsequently sets hard.
Various grouting techniques:
Grout can be used to fill voids in soil, cracks in rock and voids caused by dissolution (referred to as crack, impregnation or cavity filling grouting), and/or penetrate by displacing the soil by means of pressure or hydrofracturing (this is referred to as compaction grouting or solid grouting and hydrofracture grouting.). Displacement grouting can be used to limit structural deformation as a result of excavation (galleries and tunnels, large-scale urban excavations, etc.); this is referred to as compensation grouting (of structural settlement).
Grouting is always injected by drilling, often using devices to control the flow of grout into the soil (injection tubes, obturator bags, “tubes à manchettes”, etc.)