The results of CPTU tests are used to determine the strength parameters of a dike subsoil. Stress state and stress history of the subsoil under the flood embankment was evaluated with CPTU and DMT tests. Normally consolidated soil was found under the central part of the dike, while the subsoil near the dike toe is found to be overconsolidated. Due to consolidation the undrained shear strength of the subsoil under the central part of the dike is generally higher than near the dike toe. The undrained shear strength estimated with CPTU tests depends also on the complex phenomena of the filtration under the dike. The CPTU dissipation tests in soft soils and the monotonic decay of water pressure induced during penetration under the central part of the dike confirm the presence of normally consolidated subsoil. Dilatory pore pressure response, typical for overconsolidated soils, was mainly observed in the tests performed at the toe of the dike at the waterside and downstream side. The shape of pore water dissipation curve reflects stress state and stress history of the subsoil.
Authors
Additional information
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2014
