Ground improvement dynamic compaction REPLACEMENT

Dynamic Replacement (DR) is an extension of Dynamic Compaction (DC) to highly compressible, organic and weak soils. Dynamic Replacement columns are formed through a succession of tamping and back-filling sequences. This process uses heavier drop weights (pounders) than Dynamic Compaction to improve the penetration and punching of the weight through the in-situ soft soils. This method combines the advantages of both Dynamic Compaction and Stone Columns, by creating large diameter Dynamic Replacement Inclusions (D = 2 to 2.5 m), with high internal shear resistance. Dynamic Replacement (DR) technique can deliver replacement ratio of up to 25% and each column can support loads of up to 150 tons. TREVI has applied this technique to several sites for very different types of structures and conditions (industrial projects, heavy storages, buildings…). Key Features: - Derived from Dynamic Compaction (DC), - Applicable for wide range of soils, - Increases the bearing capacity of soils, - Reduces the post-construction settlement, Advantages: - Versatile technique, economical and fast (Production up to 25,000 sq.m/crane/month/shift), - Very sustainable technique, uses wide range of material to create the pillars by means of Gravel, Sand, demolished concrete and dredged material, - Well adapted to small & large scale projects, - Real-time adjustment of the applied energy to the actual ground conditions.