The results of suction controlled triaxial compression tests on an unsaturated coarsegrained soil are examined in detail. The tested material is a silty sand obtained by reconstituting a pyroclastic weak rock from Roma. The stress-dilatancy data from triaxial tests on the reconstituted and unsaturated material are compared to the experimental results obtained for the same saturated material in reconstituted and natural state. The whole set of data shows clearly the influence of suction on soil-dilatancy and shear strength; a significant difference can be noted in the dilatant behaviour between the reconstituted unsaturated soil and the intact natural material.
Soil dilatancy and suction: some remarks on their mutual effects on the shear strength of granular soils
CATTONI, ELISABETTA;
2005-01-01
Abstract
The results of suction controlled triaxial compression tests on an unsaturated coarsegrained soil are examined in detail. The tested material is a silty sand obtained by reconstituting a pyroclastic weak rock from Roma. The stress-dilatancy data from triaxial tests on the reconstituted and unsaturated material are compared to the experimental results obtained for the same saturated material in reconstituted and natural state. The whole set of data shows clearly the influence of suction on soil-dilatancy and shear strength; a significant difference can be noted in the dilatant behaviour between the reconstituted unsaturated soil and the intact natural material.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
