9.7.1 Grouting

Grouting is a cement, silicate, or acrylamide based slurry, viscose enough to be poured or injected into soil and thereby fill, seal, or compact the surrounding soil. Grouting is done through pressure injection of this slurry in holes drilled into fissured, jointed, permeable rocks and compressible soils to reduce their permeability and increase their strength. The type and amount of grout that is needed in a stabilization of slope is generally based upon grain size distribution, density, water content, and chemistry of the soil, as well as desired function of the grout. Grouting is often viewed as a versatile method of ground improvement for application in difficult soil and rock conditions.