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Achieving Improvement with Dynamic Replacement Stone Columns – Impact Crater Depth -Capacity Evaluation

F. H. van der Merwe and C. Purchase 2017.

Proceedings of the 9th YGE Conference, Durban.

Dynamic replacement penetration tests, with both the Dynamic Compaction (DC) and Rapid Impact Compaction (RIC) methods, have been carried out on three sites in South Africa on variable ground profiles. Quality assurance is normally done by means of plate load tests on selected stone columns and a limit is typically placed on the acceptable deformation modulus, for the Engineer to approve works. The results from the penetration tests are presented, with a comparison of the achieved deformation moduli.


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