shrink and pull away even when coarse sediments have been penetrated. Different grout may be needed for fine grained and coarse grained soils in the grouted area. The greatest use of pressure grouting is to improve geomaterials (soil and rock).

The purpose of grouting can be either to strengthen a formation or to reduce water flow through it. It is also used to correct faults in concrete and masonry structures. In 1986 a study conducted by the Hazardous Waste Engineering