Compaction Grouting Used for a Water Treatment Plant Expansion

This paper discusses the selection, design and implementation of compaction grouting to density a zone of loose sands and silts below a proposed expansion to the Adkins Water Treatment Plant in Six Mile, South Carolina. The water treatment plant is owned and operated by Greenville Water System. The expansion included construction of a duplicate set of sedimentation basins and filters adjacent to the existing basins. Each set of basins is about 183 m (600 ft.) in length and 34 m (110 ft.) in width spanning across a shallow natural valley. The paper summarizes the history of the project from identifying the previous settlements, through selection of the remediation technology, to construction performance.