SOIL MIXING IS AN EFFECTIVE IN-SITU METHOD TO INTRODUCE A REAGENT USING EXCAVATION EQUIPMENT, WHICH ALTERS THE CHEMICAL OR PHYSICAL CONDITION OF THE SOIL, WHILE PROMOTING HOMOGENEITY. The reagent is applied at a specific dosage rate and mixed in a one-step process using excavation equipment and mixing techniques without transporting soil from the treatment area.
Cement, polymers, or pozzolanic reagents are introduced to stiffen or solidify the soil unit, adding compressive strength and reducing permeability, where ultimate soil properties typically mimic soft rock. For environmental applications, this approach can be used to reduce contaminant(s) interaction with the surrounding environment and reduce contaminant leaching. Alternatively, a chemical reagent can be applied to reduce, oxidize, or transform contaminants.