A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Consolidation of Saturated Kaolin Subjected to Intermittent Thermal Loading with Temperature Gradient
This paper explores the influence of two thermal loading protocols on the evolutions of stress state and soil consolidation characteristics during subsequent mechanical loading. We employed a specially designed thermal consolidometer to conduct a series of drained heating tests with temperature gradient across a saturated kaolin specimen at different levels of vertical effective stress. The thermal consolidometer accommodated for (1) continuous measurements of excess pore water pressure and temperature at different locations within a specimen; and (2) establishment of a steady nonuniform soil temperature distribution, a condition that often exists in the field. Staged and cyclic thermal loading revealed the influences of vertical effective stress on total and nonrecoverable thermal strain. Continuous measurements of pore pressure and soil volume change traced the evolution of average vertical effective stress with void ratio. While the negative pore pressure measurements at the end of thermal consolidation of normally consolidated clay suggested a pseudo-overconsolidated behavior upon heating at low values of vertical effectives stress, such a tendency diminished with an increase in stress level. A gradual shift in normal consolidation line at ambient temperature suggested continuous hardening of a normally consolidated specimen when subjected to repeated thermal loading cycles in the past.
Consolidation of Saturated Kaolin Subjected to Intermittent Thermal Loading with Temperature Gradient
This paper explores the influence of two thermal loading protocols on the evolutions of stress state and soil consolidation characteristics during subsequent mechanical loading. We employed a specially designed thermal consolidometer to conduct a series of drained heating tests with temperature gradient across a saturated kaolin specimen at different levels of vertical effective stress. The thermal consolidometer accommodated for (1) continuous measurements of excess pore water pressure and temperature at different locations within a specimen; and (2) establishment of a steady nonuniform soil temperature distribution, a condition that often exists in the field. Staged and cyclic thermal loading revealed the influences of vertical effective stress on total and nonrecoverable thermal strain. Continuous measurements of pore pressure and soil volume change traced the evolution of average vertical effective stress with void ratio. While the negative pore pressure measurements at the end of thermal consolidation of normally consolidated clay suggested a pseudo-overconsolidated behavior upon heating at low values of vertical effectives stress, such a tendency diminished with an increase in stress level. A gradual shift in normal consolidation line at ambient temperature suggested continuous hardening of a normally consolidated specimen when subjected to repeated thermal loading cycles in the past.
Consolidation of Saturated Kaolin Subjected to Intermittent Thermal Loading with Temperature Gradient
J. Geotech. Geoenviron. Eng.
Tiwari, Arvind Kumar (author) / Basu, Prasenjit (author)
2024-08-01
Article (Journal)
Electronic Resource
English
Fluctuation responses of saturated porous media subjected to cyclic thermal loading
| Online Contents | 2006
Subsequent Consolidation of Clay Subjected to Undrained Cyclic Loading
| British Library Conference Proceedings | 1995
RESPONSE OF SILTY SAND SUBJECTED TO INTERMITTENT CYCLIC LOADING
| British Library Conference Proceedings | 1995