| Přispěvatelé: |
17th Southeast Asian Geotechnical Conference Taipei, Taiwan 10-13 May 2010, Baki, Abdul Lahil, Rahman, MM, Lo, SR |
| Popis: |
Cyclic undrained behaviour of sand with different fines content was investigated through stress-controlled cyclic triaxial tests with partial stress reversal. The test results were analysed based on the concept of equivalent granular state parameter, *. Three differenttypes of behaviour were observed: namely cyclic instability, cyclic mobility and an in-between transition behaviour. Cyclic instability was observed for loose sand-fines mixtures with a positive *, and can be related to the instability stress ratio of monotonic test with same equivalent granular void ratio, e* as long as instability was controlled by the compression side of the stress space. On the other hand, cyclic mobility was observed for samples had negative *. However, transition behaviour was observed for samples with * values close to zero usc |
