METHOD FOR STRENGTHENING WEAK SOILS OF ROADBED BASE Russian patent published in 2017 - IPC E02D3/12 

FIELD: construction.

SUBSTANCE: method for strengthening soils, including feeding water and cement grout into the soil from the surface by water and cement high-pressure jets and forming a vertically oriented support system; feeding the water and cement grout is carried out under the pressure of about 50 MPa through a jet-forming nozzle in the process of immersing the plunger under the weight of theroller-injector in its housing; forming the vertically directed support system is carried out in the form of spatial cone-shaped columns.

EFFECT: increasing the strength of the subgrade base soils of motor roads and railways, airfields and similar structures, improving the quality of consolidation, reducing the labour intensity of the equipment maintenance and the material resources.

3 dwg