Abstract
The deformation response of unbound granular materials (UGMs) is composed of two distinct parts: permanent and resilient. Both parts are commonly modelled assuming time-independent behavior. This work focused on the resilient response part; the objective was to experimentally confirm or invalidate the time-independence assumption. For this purpose, a cylindrical UGM specimen was exposed to a sequence of load-unload-rest in axial compression under two different confinement levels. Resulting strain responses were closely monitored during the rest phases, where no changes in deformation are expected. Nonetheless, it was observed that both axial and radial strains gradually recovered for several minutes subsequent to axial unloading, clearly indicating that the resilient response of the UGM is time-dependent.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the XVII ECSMGE-2019 |
| Number of pages | 5 |
| Publisher | International Society for Soil Mechanics and Geotechnical Engineering |
| Publication date | 2019 |
| ISBN (Electronic) | 978-9935-9436-1-3 |
| DOIs | |
| Publication status | Published - 2019 |
| Event | The XVII European Conference on Soil Mechanics and Geotechnical Engineering - Reykjavik, Iceland Duration: 1 Sept 2019 → 6 Sept 2019 Conference number: 17 |
Conference
| Conference | The XVII European Conference on Soil Mechanics and Geotechnical Engineering |
|---|---|
| Number | 17 |
| Country/Territory | Iceland |
| City | Reykjavik |
| Period | 01/09/2019 → 06/09/2019 |
Keywords
- Unbound granular material
- Resilient response
- Time-dependent behavior
- Triaxial testing
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