Laboratory evaluation of sampling quality of a new A+ sampler for natural fine soils
Laboratory evaluation of sampling quality of a new A+ sampler for natural fine soils
This paper presents a comparison of sampling disturbance measured by consolidation tests between two high quality samplers and stationary piston samplers. University G. Eiffel and Cerema have used their université Laval sampler and a new sampler on a soft organic clayey soil experimental site. This paper present first the new sampler designed to sample almost undisturbed soil specimens. The objectives of this sampler are to collect natural fine soils such as clay or silt, normally to medium overconsolidated for depths up to 10 m. This sampler is designed to preserve the saturation state of the specimen. An inner diameter of 150mm core barrel allow with the size of a ball valve used to close the sampler to remain relatively compact. Tests on Pont de Cran clayey site are presented and laboratory tests results on specimen sampled using both tools shows using void ratio criteria the quality of the specimen and the efficiency of the samplers.
Sonia Fanelli; P. Reiffsteck; Franck Pilniere; Fabrice Jade; Jerome Mauxion; Jerome Rebour
8th International Symposium on Deformation Characteristics of Geomaterials (ISDCG2023)
I.3) Advanced sampling
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