| Issue |
E3S Web of Conf.
Volume 544, 2024
8th International Symposium on Deformation Characteristics of Geomaterials (IS-Porto 2023)
|
|
|---|---|---|
| Article Number | 03002 | |
| Number of page(s) | 6 | |
| Section | Experimental Investigations From Very Small Strains to Beyond Failure - Advanced Sampling | |
| DOI | https://doi.org/10.1051/e3sconf/202454403002 | |
| Published online | 02 July 2024 | |
Laboratory evaluation of sampling quality of a new A+ sampler for natural fine soils
1 Univ. G. Eiffel, IFSTTAR, dept GERS, Lab SRO, Champs sur Marne, France
2 CEREMA, REM Dir, 23 avenue de l’Amiral Chauvin, 49136 Les Ponts de Cé, France
3 CEREMA, West Dir, 5 rue Jules Vallès, 22015 Saint Brieuc, France
* Corresponding author: Philippe.reiffsteck@univ-eiffel.fr
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 to keep the sampler relatively compact, even with the size of a ball valve used to close the sampler. Tests on Pont de Cran clayey site are presented and laboratory tests results on specimen sampled using both samplers show the quality of the specimen and the efficiency of the samplers using void ratio criteria.
Key words: sampler / sampling quality / remoulding / consolidation
© The Authors, published by EDP Sciences, 2024
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