Märkäsekoitusruiskutus

Märkäsekoitusruiskutus, also known as wet mixing injection, is a technique used in construction and geotechnical engineering. It involves injecting a mixture of cementitious materials and water directly into a soil or rock formation. The process aims to improve the ground's properties, such as its strength, stability, and impermeability.

The primary components of the injected mixture, often referred to as grout, are typically cement, water, and sometimes additives like bentonite or fly ash. These additives can modify the rheological properties of the grout, control its setting time, or enhance its performance characteristics. The "wet" aspect refers to the fact that the grout is mixed with water and injected in a fluid state, unlike dry mixing methods.

Märkäsekoitusruiskutus is commonly employed in various applications. These include stabilizing existing structures, preventing groundwater ingress in tunnels and excavations, consolidating loose soils, and creating impermeable barriers to control seepage. It can also be used to fill voids and cavities within the ground.

The injection process typically involves drilling holes into the ground to the desired depth. The grout is then pumped through these boreholes under pressure. The pressure forces the grout to penetrate the pores and fissures of the soil or rock, displacing existing fluids and filling the voids. Multiple injection points may be used to achieve comprehensive ground treatment. The effectiveness of märkäsekoitusruiskutus depends on factors such as the properties of the ground being treated, the composition of the grout, and the injection parameters like pressure and flow rate.