Effective Friction Angle Of Deltaic Soils In The Vistula Marshlands
| Autor: | Lech Bałachowski, Jakub Konkol, Kamila Międlarz |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
021110 strategic
defence & security studies Peat 0211 other engineering and technologies triaxial testing Engineering geology. Rock mechanics. Soil mechanics. Underground construction 02 engineering and technology Geotechnical Engineering and Engineering Geology soft soils Mechanics of Materials Friction angle Soil water cptu peat TA703-712 Geotechnical engineering angle of internal friction Computers in Earth Sciences Porous medium 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | Studia Geotechnica et Mechanica, Vol 41, Iss 3, Pp 143-150 (2019) |
| ISSN: | 2083-831X |
| Popis: | This article presents the results of laboratory tests on soft, normally consolidated soils from the Vistula Marshlands. Samples of high-plasticity organic soils (muds) taken from 3.2–4.0 m and 9.5–10.0 m depth, as well as peat deposit at 14.0 m, are analysed. Presented case study confirms the applicability of the Norwegian Institute of Technology (NTH) method based on Cone Penetration Tests (CPTU) and allows for a conservative estimation of effective friction angle for muds. The plastification angle equal to 14.5° for organic silt, applied in the modified NTH method, fits well the triaxial test (TX) results. Moreover, the dilative-contractive behaviour according to the CPTU soil classification based on the Robertson’s proposal from 2016 corresponds well with volumetric changes observed in the consolidated drained triaxial compression tests. The internal friction angles of the Vistula Marshlands’ muds and peats are lower in comparison with the database of similar soft soils. |
| Databáze: | OpenAIRE |
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