Known as compaction grouting, this ground improvement method densifies the soil by grouting a network of inclusions under pressure.


What is compaction grouting and why do we use it?

Compaction grouting is a ground improvement method. It stabilizes and densifies compressible soils and mitigates liquefaction. This technique can also serve as vertical reinforcement similar to rigid inclusions.

Basic principle of compaction grouting

This method uses mortar or concrete to laterally compact the soil without vibrations.

Execution of compaction grouting

The process involves injecting a high-viscosity mortar under pressure at a controlled flow rate. This displaces and compacts the soil around the drilling tool. The compaction ratios are typically high, ranging from 6-10%.

CMC techniques for soil

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