Ground improvement is the primary application of many geotechnical construction techniques, permitting construction on soils by changing their characteristics.

 

Soil mixing increases shear strength and reduces compressibility and permeability of soft soils. Adding cement or lime during soil mixing will also reduce the moisture content of the soil and further increases shear strength of soil and will impact on the characteristics of the soil.

 

Dynamic compaction permits shallow spread footing construction, collapses voids, and lowers the liquefaction potential.

 

Injection systems improve the characteristics of expansive clays/clayey soils.

 

Rapid impact compaction permits shallow spread footing construction. 

 

Geosynthetic material such as geogrid is used to reinforce soils. Geogrids are commonly used to reinforce retaining walls, as well as sub-bases or subsoil below roads or structures.

​