Evaluation of Rapid Impact Compaction Method for Soil with Different Fine Content

Rapid Impact Compaction (RIC) is an alternative compaction technique which fills the gap of improving depth between shallow and deep compaction. The RIC technique is done by dropping the weight hammer on the circular base of the steel base on the ground. This study presents the RIC field trail test with different energy, filling thickness and fine content. The result of field test before and after improvement, which are Cone Penetration Test (CPT), Plate load test (PLT), is presented in this study to check the efficiency of the RIC technique. Field test results show that low-fine soil is significantly improved. However, improvements are not clearly visible for soils with high fine content. The strength and stiffness of soil after improvement was significantly effects by the fine content of material. The effective depth of improvement by RIC is 4 m. from the ground surface.