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Grouting Services

There are mainly seven types of Grouting:

Grouting Services

A thin, watery mortar or plaster that is pumped or forced into joints, cracks, and spaces as an adhesive sealer. Or it may be a mixture that is pumped into the soil around a foundation to firm it up and provide better load-bearing characteristics.

The purpose of the grout curtain is restrict seepage to such an amount that it does not cause too much loss of storage, and does not dislodge the foundation downstream or erode the base of the dam.

 

Packer grouting :-

Consists of drilling a hole to its full depth in a single operation, Cleaning and washing, water-pressure testing if required and grouting the hole in Successive stages in any desired sequence of section which are isolated by use of packers from the ungrouted sections. This method shall generally be used.

Stage grouting :-

If stage grouting becomes necessary, it shall be performed in successive depth intervals (stages) in each hole beginning at the rock surface and progressing to the deeper stages. All of the holes in a specified area shall be drilled and grouted in each stage before grouting of the succeeding stage is begun. The stages and the grouting pressures for each stage shall be as specified unless otherwise directed by the engineer. Each stage of a hole shall be washed with water and air simultaneously and immediately before grouting. Washing under pressure or pressure testing shall be performed as specified in section 10 of this specification.

Consolidation Grouting:-

Is the drilling of shallow holes and grouting of the rock in Foundation of the Dam, Spillway, Intake and in rock surrounding the tunnels and Shafts.

Curtain Grouting:-

Is the grouting executed to form a continuous impervious wall. In Principle, this curtain shall consist of a single row of holes divided into zones of Variable depths, inclinations and spacing.

Contact Grouting:-

It is drilling and grouting at low pressures required to fill the voids between concrete and rock surface or between concrete and steel lining.

Grouting Pressure:-

Shall mean the pressure of grout injection as measured at the Nearest pressure gauge near collar of hole while the grout is being pumped into the Hole.

Sleeve Grouting:-

Grouting shall be advanced with the help of rubber sleeve.

 

Permeation Grouting:-

Permeation grouting, also known as cement grouting or pressure grouting, fills cracks or voids in soil and rock and permeates coarse, granular soils with flowable particulate grouts to create a cemented mass.

Jet Grouting :-

Jet grouting creates in situ columns of soilcrete (grouted soil), using a grouting monitor attached to the end of a drill stem. The jet grout monitor is advanced to the maximum treatment depth. Then high velocity jets (cement grout with optional water and air) are initiated from ports in the monitor.

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