Grouting
Grouting in civil engineering refers to the injection of pump-able materials into a soil or rock formation to change its physical characteristics. It is one of the ways ground water can be controlled during civil engineering works.
Grouting is suitable where soil permeability would create a heavy demand on pumping or where ground conditions mean it may be economically inefficient to bore wells. Grout may also be used in the formation of pile foundations, ground anchors, under-reaming, underpinning, in road construction, dam construction, and other applications.