Grouting - or injection - is a procedure to improve the strength properties of the subsoil or to diminish its permeability. Open voids in porous soils or in jointed rocks often impair the strength and/or the impermeability of the underground which cannot be stressed as required.
On account of the essentially different nature of the voids in soils from those in rocks, grouting techniques have been adapted to meet specific requirements.
Grouting for DAM PROJECTS can be subdivided into different methods:
Permeation grouting, compaction grouting, rock grouting, jet grouting and gravity grouting.