Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/2117/27146

Shear strength degradation in claystones due to environmental effects
Pineda Jiménez, Jubert Andrés; Romero Morales, Enrique Edgar; De Gracia, Manuel; Sheng, Daichao
Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica; Universitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
This note explores the influence of environmental effects, as those induced by cyclic changes in relative humidity, on the degradation of the shear strength parameters in Lilla claystone, a low-porosity clayey rock from northern Spain. The results of a comprehensive experimental programme, combining long-term relative humidity cycling tests with saturated direct shear tests, are described. A continuous monitoring of the evolution of volumetric strain during the previous relative humidity cycling is used to evaluate the swelling behaviour of the rock. Both undisturbed and degraded specimens are subjected to shearing at saturated conditions to determine the peak and post-rupture shear strength envelopes. The effects on rock brittleness and dilation angle are also analysed. Shear strength shows a strong dependence on the history of relative humidity cycling. In particular, the evolution of the peak shear strength parameters (c' and f ') seem to be related to the accumulated irreversible strains developed during each cycle. A damage law, recently proposed by the authors, is used to represent the progressive degradation of the shear strength parameters as a function of the accumulated irreversible strains.
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
Landslide hazard analysis
suction
shear strength
laboratory tests
soft rocks
tunnels
landslides
Esllavissades
info:eu-repo/semantics/publishedVersion
Artículo
Thomas Telford
         

Mostrar el registro completo del ítem

Documentos relacionados

Otros documentos del mismo autor/a

Burton, G. J.; Sheng, Daichao; Romero Morales, Enrique Edgar
Pineda Jiménez, Jubert Andrés; Romero Morales, Enrique Edgar; Alonso Pérez de Agreda, Eduardo; Pérez Revilla, Tomás
Pineda Jiménez, Jubert Andrés; Romero Morales, Enrique Edgar; Tarragó, Dani; Tauler, Esperança; Alonso Pérez de Agreda, Eduardo
Morales, Laura; Romero Morales, Enrique Edgar; Pineda Jiménez, Jubert Andrés; Garzon, E.; Giménez, Antonio
Sheng, Daichao; Fredlund, Delwyn G.; Gens Solé, Antonio