Abstract: A method for improving the mechanical and hydraulic characteristics of soils, including a step of providing tension members or nails which have an anchoring portion anchored in the soil to be improved and a second end portion fixed substantially at the surface of the soil to be improved; and a step of injecting cement mixtures or synthetic mixtures into the volume of soil to be improved below the surface. The mixture injection step is performed after providing the tension members or nails.

Abstract: A method for improving the mechanical and hydraulic characteristics of soils, including a step of providing tension members or nails which have an anchoring portion anchored in the soil to be improved and a second end portion fixed substantially at the surface of the soil to be improved; and a step of injecting cement mixtures or synthetic mixtures into the volume of soil to be improved below the surface. The mixture injection step is performed after providing the tension members or nails.

Abstract: A method for water-proofing underground structures (10) comprising: a step of injecting an expanding compound adjacent to the surface (10b) directed toward the outside of an underground structure (10) to be waterproofed in order to form at least two confinement portions (2); a step of injecting a diffusing compound (4) intended to harden adjacent to the surface (10a) directed toward the outside of the underground structure (10) and at a completion region (3) that is delimited by said at least two confinement portions (2).

Abstract: A method for waterproofing below-grade structures includes at least one step of injecting at least one compound adjacent to the surface that is directed toward the outside of a region of soil arranged adjacent to a below-grade structure to be waterproofed. The method further includes at least one step of measuring the electrical resistivity of the at least one region of soil subjected to the injection step. The at least one measurement step is adapted to detect the portions of the region of soil that are affected by the injection of the at least one compound.

Abstract: A method for water-proofing underground structures (10) comprising: a step of injecting an expanding compound adjacent to the surface (10b) directed toward the outside of an underground structure (10) to be waterproofed in order to form at least two confinement portions (2); a step of injecting a diffusing compound (4) intended to harden adjacent to the surface (10a) directed toward the outside of the underground structure (10) and at a completion region (3) that is delimited by said at least two confinement portions (2).

Abstract: The present invention refers to a method for determining the rigidity of a geological layer in terms of propagation velocity of the elastic waves within a geological system delimited by a free surface (2) and comprising at least one first geological layer (6) having a second rigidity and a second geological layer (5) having a second rigidity and being arranged below the first geological layer, said first and second layer being separated from each other by an interface (3), the method comprising the steps of: positioning a source (4) suitable to generate seismic waves in the second geological layer (5), whose rigidity is intended to be measured; activating said source of seismic waves; detecting at least one seismic signal by means of at least one sensor arranged coupling with the free surface, and determining—from at least one seismic signal—a shear velocity of the elastic waves in the second layer and thus indicating the rigidity of the second layer.

Abstract: A method for saturating cavities present in a mass of soil or in a body in general, comprising at least one step for at least partial filling of the cavity by introducing into the cavity a filler material in the solid state or in the fluid state and capable of setting. At least one step of saturating the cavity is then performed by introducing into the cavity a fluid synthetic substance which expands and sets by chemical reaction. The synthetic substance is adapted to generate, as a consequence of its expansion, at least the saturation of the cavity and a compaction and/or loading of the filler material introduced into the cavity in the filling step, creating an optional state of permanent tension on the walls that delimit the cavity, to the point of producing, if necessary, a deformation of the walls.

Abstract: A method for saturating cavities present in a mass of soil or in a body in general, comprising at least one step for at least partial filling of the cavity by introducing into the cavity a filler material in the solid state or in the fluid state and capable of setting. At least one step of saturating the cavity is then performed by introducing into the cavity a fluid synthetic substance which expands and sets by chemical reaction. The synthetic substance is adapted to generate, as a consequence of its expansion, at least the saturation of the cavity and a compaction and/or loading of the filler material introduced into the cavity in the filling step, creating an optional state of permanent tension on the walls that delimit the cavity, to the point of producing, if necessary, a deformation of the walls.