Compaction grouting designs are an excellent choice when ground conditions such as loose soil or sinkholes are present on a site. The purpose of compaction grouting, also known as low mobility grouting, is to seal any voids and consolidate the soil in the designated treatment area. The process involves drilling to a specific depth with casing in the defined areas and pressure injecting a determined amount of grout while retrieving the casing. As the casing extraction progresses, the grout forms bulbs which in turn densify or compact the soil. The process is repeated in secondary areas on the project site if required.
Some of CDE’s compaction grouting services address:
Additionally, compaction grouting applications can be tailored to the specific site to meet or exceed the project specifications. The grout mix can be customized to optimize capability and since it is greatly influenced by the in-situ geological characteristics.
Generally, compaction grouting installations involve duplex drilling in the treatment area followed by the pressure injection of a cementitious material into the underlying loose soils. This method improves the loose soils or repairs sinkholes in an affected area. The Coastal team of designers work to determine the best installation method for the specific compaction grouting application. Computer monitoring and evaluation of the grouting operation can also be administered to ensure optimal performance. Additionally, Coastal has the ability to maneuver and grout around existing structures to rectify subsidence in existing commercial or residential areas. The following reflect just a small sampling of successful projects featuring compaction grouting: