Compaction grouting was developed over 50 years ago as a means of densifying soft and weak soils under existing structures as well as a means to re-level the structure itself once settlement had occurred. The technique can treat not only the symptom of the problem (settlement) but also the cause (the underlying soft soil); thereby cost-effectively, and with limited intrusion, extend the life of the structure. This paper presents techniques and associated installation procedures as they relate to ground improvement. Settlement control will also be discussed and applications for structure rehabilitation will be summarized.
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