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Grouting in Soil



Grout injection techniques were developed to merely fill a void in the soil. It is gaining popularity worldwide owing to its secure use system. Below are some of the popular grout injection system available.

There are many different types of grout and they each serve a purpose. We at Geo Grout Ground Modification Specialists, Inc. believe that an educated customer is a right and happy customer.

Soil Grouts are classified into different types.

 Cement-Based Grouts: 

Cement-based grout can be found in both sanded and unsanded form. It is easy to work and clean. It is used in making craft projects.  It is also known as slurry grouting or hydraulic cement grouting. Cementitious grout is used to seal wide cracks particularly in gravity dams, canal linings, foundations, and thick concrete walls and also used for improving extra strength to machine foundations,  or equipment and others.

Permeation Grouting/Chemical Grout:

This method consists of polymers such as acrylic, polyurethane, sodium silicate, epoxy or any other suitable polymer. Chemical grout is an emulsion of water and liquid resin. Chemical grouting requires injection of specially formulated chemical grouts into shelves that cannot be possible by cement grouts. They can be applied in moist environments and can fill excellent cracks.

Compaction Grouting

Compaction Grouting involves an injection of low mobility grout via drill casings that are drilled/driven to pre-set depths. The grout, usually comprised of cement, sand,  and water, is placed from the bottom-up with pressure based criteria. It is also commonly known as Low Mobility Grouting. Most effective in cohesionless soils but can also be effective in the short term in fine-grained soils where disturbance has occurred.

Jet Grouting

Jet grouting uses a high-pressure ‘jet’ of either grout, water, air or a mixture to erode soil whilst simultaneously injecting grout into the soil through a ‘jet monitor’. The specially created drill stem and monitor are raised and rotated at the same time to combine the grout with the original soil to form ‘soilcrete’. The end product is cemented round columns and is mainly effective in any soil but not necessarily efficient in every soil.

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