Chemical Grouting

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Every member on site was completely knowledgeable of the process and one of them even helped me track my dog down when he darted out of the front door. Class act in my book, thanks again GSS."

- Ethel R. Homeowner Tampa, Fl

Sinkhole Solutions
Our local, American made product solutions will not only remediate your structure, but lift up the local economy.


Helical piers are ideal for applications where there is a need to resist both tension and axial compression forces. Read More


Steel underpinning is an effective solution that takes the load of the foundation system off the soft soils and extends it... Read More


Compaction Grouting:
Compaction grouting can strengthen soil that is weak or has broken apart over many years. Read More


Injection Piers:
Injection piers utilize both the underpinning and the compaction grouting method. Read More

Global Chemical Grouting
Featuring Prime Resins - An American Company

Compaction Grouting

Compaction grouting is a method where fast setting polyurethane foam is injected into loose soil. The foam expands rapidly forming balls or columns of dense structural foam. The expansion compacts the surrounding soils and increases the load bearing capacity.

Our Precision Lift foams can be injected into soil using specialized equipment that heats the resin and speeds up the reaction. The expansive forces of the foam combined with the injection pressure from the pump compact the soil and fill voids in the area immediately adjacent to the foam.

Prime Flex 920 with a full dose of catalyst can also be used to compact soil. In this case the reaction time is accelerated so that loose soil adjacent to the probe are forced outward as the resin expands.

Compaction and Permeation Grouting at the Same Time

Injecting any of our foams can actually both permeate and compact soil at the same time. Depending on the reaction time of the material (controlled by formulation, amount of catalyst, and temperature settings of equipment), the foam will permeate the soil as it is expanding. Once the outer layers of the foam begin to solidify, the permeation process ends and the compaction process begins. Injection pressures from the pump and expansive pressure from the continuously injected resin force the outer material tight against the surrounding soil causing it to compact. This all happens in minutes and allows treated areas to be returned to service immediately.