Jet Grout - Fenzemin

Jet Grout

Jet grouting is the process of forming cylindrical soil-cement columns in the ground using a controlled and high-pressure cement injection jet. This technique allows for the improvement of existing soils and uncontrolled fills, as well as the creation of soil-cement curtains that serve as retaining and impermeability structures. Jet grouting is a cost-effective solution for soil improvement in loose soils with high groundwater levels. Additionally, it is commonly applied in retaining systems in water-saturated soils to ensure impermeability.

Jet grout applications are performed using three different systems: Jet 1 (Mono Jet), where the soil cutting and filling processes are carried out solely with the injection jet; Jet 2 (Double Jet), where the mono jet is supported by an air cushion; and Jet 3 (Triple Jet), where air and water are used in addition to the injection jet.

Jet grout columns are formed by spraying a water-cement mixture at pressures of 400-600 bars to fill and compact the voids in the soil. The water-cement mixture cuts through the soil and combines with it, creating a cemented soil structure.