BENTINJECT®

BENTINJECT^® Injection Mixture

PROPERTIES:

• High waterproofing properties. Filtration coefficient less than 5×10^-11 m/s characterizes extremely low water permeability;
• Effective in sorption of radionuclides, hydrocarbons and heavy metal cations;
• Provides active plastic waterproofing with the ability to regenerate;
• Environmentally safe;
• Resistant to shear and ground settlement;
• Chemically resistant compared to cements.

ADVANTAGES:

• elastic active insulation with the ability to self-compact during shifts, settlement of the structure;
• work can be carried out both from outside and inside the object (without excavation);
• work can be carried out in a limited space;
• the composition is ready for injection immediately after mixing with water;
• in the ground under normal conditions it retains its elasticity and does not dry out;
• freezing and thawing do not affect the insulation properties;
• the service life of the waterproofing is comparable to the service life of the building itself;
• consists mainly of natural minerals that do not affect the environment.

FIELDS OF APPLICATION:

Restoration of waterproofing of buried structures

• foundations, underground car parks;
• tunnels, underground passages.

Creation of vertical, horizontal and inclined sorption and impervious curtains in the ground

• domestic and industrial waste landfills;
• hydraulic structures;
• near-surface disposal of radioactive waste (RAW) of low and medium hazard;
• decommissioning of nuclear- and radiation-hazardous sites (NRHSs) through conservation for long-term storage.

CONTOUR INJECTION

BENTINJECT® is injected into the confined space using specialised equipment. As a result, the injected waterproofing mixture penetrates into the uncompacted space between the structure and the surrounding soil, closing the paths of liquid penetration. This creates a mineral waterproofing barrier between the object to be insulated and the ground.

ADVANTAGES:

• insulation is resistant to vibrations, deformations, etc.;
• maintains the same insulation properties under freezing and thawing;
• service life is comparable to the service life of the insulated object;
• has no harmful effect on the environment.

OBJECTS FOR BENTINJECT USE:

tunnels and underground passages, underground civil defence facilities, metro stations, underground collectors, sewage and pumping stations.

JET-GROUTING

The soil in the borehole is broken up by the high-pressure jet and mixed with BENTINJECT® Barrier Mud, during the return pass of the drill rod.

ADVANTAGES:

• ability to provide impervious curtains up to a depth of 60 metres;
• active waterproofing around the perimeter of the structure;
• any complexity of the screen geometry.

OBJECTS FOR BENTINJECT USE:

Domestic, industrial and radioactive waste accumulation facilities.

DIAPHRAGM WALL

This is a method of vertical impervious screen construction, where the ‘body’ of the screen is formed in the working trench. The trench is excavated using bentonite slurry to prevent wall collapse. The slurry is then replaced with a denser BENTINJECT® solution by pumping the material into the trench.

ADVANTAGES:

• possibility of creating impervious screens at depths of up to 60 m and widths of 0.4 to 1 m;
• active waterproofing around the perimeter of the structure;
• high degree of screen reliability.

OBJECTS FOR BENTINJECT USE:

Domestic, industrial and radioactive waste accumulation facilities.