SOIL STABILIZATION With the grand scope and significant costs embraced by large-scale civil undertakings, the condition of the soil around and under the project is a risky component that demands careful consideration. Improving the performance of the soil with injectable grouts is a standard solution for a difference of geotechnical needs. In the case of walls, earthen dams, and in-place waste encapsulation, the soil itself serves as the basic media. In other projects, such as subway and mining tunnels, vertical beams, below-ground structures, and waste and compact ponds, injected grout serves to stabilize, increase, and curtain-off groundwater, rendering such projects viable in most any soils-structure condition. Permeation Grouting is the most popular and oldest form of soil grouting. The technique consists of digging a hole in the soil, including an injection pipe into the ground and then pumping any number of liquefied materials into the problem area. The hole is drilled, wh...