Wall friction effects in direct shear tests of soft soils

0349137 - ÚTAM 2011 RIV SK eng C - Konferenční příspěvek (zahraniční konf.)
Herbstová, Vladislava - Herle, I.
Wall friction effects in direct shear tests of soft soils.
Proc. of the XIVth Danube-European conference on Geotechnical Engineering. Bratislava: Slovak University of Technology, 2010 - (Frankovská, J.; Hulla, J.; Ondrášik, M.; Turček, P.), s. 107-116. ISBN 978-80-227-3279-6.
[Danube-European Conference on geotechnical engineering /14./. Bratislava (SK), 02.06.2010-04.06.2010]
Grant ostatní: GA AV ČR(CZ) IAA201110802
Program: IA
Výzkumný záměr: CEZ:AV0Z20710524
Klíčová slova: direct shear test * wall friction * soft soil
Kód oboru RIV: DB - Geologie a mineralogie

The paper presents results of tests on a reconstituted fine grated soil in a recently developed direct shear box apparatus with freely vertically movable upper frame. Frictional force developed due to relative movement between the specimen and the upper part of the shear box due to contractant volumetric deformation of the specimen during shearing.The results of direct shear tests compared with the results of triaxial tests give significantly smaller shear strength if no corrections due to frictional force are applied.
Trvalý link: http://hdl.handle.net/11104/0189455