ACTIVITIES

Jet Grouting

Jet grouting is a method able to take advantage of the performance of a cement solution injected by jet into the ground and pumped at high pressure through nozzles, inside a radius determined, in such a way that breaks down the soil and mix this, forming the columns of soil-cement.

The final result of jet grouting application is a soil-cement column, whose diameters are determined by soil type, pressure injection pump, shaft rotation speed, density of cement grout, and air pressure.

Rio de Janeiro Subway - Jardim de Alah Station - Rio de Janeiro / Brazil
Jet grouting and diaphragm wall.

BRASFOND PERFORMS MONITORED JET GROUTING COLUMNS, ENSURING HIGH QUALITY OF TREATMENT

Soil Consolidation Systems based on cement mixtures injections inserted in land layers have always remained linked with conditional factors which, in many cases, limited their applicability or damaged the final result. The inability to control the treated areas geometry or on lands with heterogeneous characteristics of permeability and grain size, shows trail mix in areas of higher permeability and lack of cementation in less permeable areas.

So Brasfond developed a system normally used in cases where it is necessary to limit the injection pressure, in order to prevent massive earth displacement or building movements.

This technique can be applied in three different ways:

  • Chemical Churning Pile - C.C.P. (single way);
  • Jumbo Special Grouting - J.S.G (2-way);
  • J.G.3 System - Column jet (3-way).
Rio de Janeiro Subway - Nossa Senhora da Paz Station - Rio de Janeiro / Brazil
Jet grouting and diapragm wall.

Learn more about the Jet Grouting

Specifications, construction sequences, injection technologies, electronic monitoring, applications, advised calculation parameters.

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