Effective friction angle of deltaic soils in the Vistula Marshlands

• Autorzy: Międlarz Kamila , Konkol Jakub , Bałachowski Lech

Identyfikatory

DOI

10.2478/sgem-2019-0016

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

angle of internal friction; CPTU; triaxial testing; soft soils; peat

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2019
• Tom: Vol. 41, nr 3
• Strony: 143--150
• Opis fizyczny: Bibliogr. 29 poz., tab., rys.

Twórcy

autor

Międlarz Kamila

• Gdańsk University of Technology, Gdańsk, Poland

autor

Konkol Jakub

• Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Poland

autor

Bałachowski Lech

• Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).