Pressure grouting, intusion grouting or consolidation grouting has been around as a solution to structural remediation problems for many years now. The processes themselves have been around for more than 100 years and they have quickly become the main solution when it comes to strata problems. The process itself involves the forced introduction of a fluid grout mixture into the load bearing soil in order to fill voids, cracks, or consolidate a strata, feature, or structure. 

There generally are two procedures when grouting upstage and downstage grouting, during upstage grouting the injection pipes are pre-driven down through the load bearing soil and the grout is then injected into the soil while the pipe is raised slowly  back up to the surface.  The grout during this process is being forced under pressure to fill the voids in the soil that leads to stabilization of the load bearing soils. Down stage grouting is literally the exact opposite of upstage grouting with the same results. The best procedure would depend on the soils and the engineer’s report. The benefits of grouting as a soil stabilization technique is that it allows us to raise damaged structures, walls and floor slabs while at the same time stabilizing the soils underneath the structure and often times around as well. This helps with any further movement that might happen due to erosion of the soils or change in the soil composition.