The paper analyzes the influence of some peculiar factors on the cyclic liquefaction behavior of a pyroclastic silty sand. The results highlight that liquefaction resistance of the natural soil is significantly enhanced by fabric with respect to that of reconstituted samples tested at the same state conditions; on the other hand, the cyclic strength of the reconstituted soil appears poorly affected by the relative density and confining stress. Furthermore, the non-plastic fine ash was observed to increase the cyclic resistance of the pumice sand with respect to that of the same coarse matrix added with plastic clay. Finally, no appreciable evidences of grain crushing were detected on all tested soils containing pumice sand. © 2016 Taylor & Francis Group, London.
A laboratory investigation on the cyclic liquefaction resistance of pyroclastic soils
Olivares L.;
2015
Abstract
The paper analyzes the influence of some peculiar factors on the cyclic liquefaction behavior of a pyroclastic silty sand. The results highlight that liquefaction resistance of the natural soil is significantly enhanced by fabric with respect to that of reconstituted samples tested at the same state conditions; on the other hand, the cyclic strength of the reconstituted soil appears poorly affected by the relative density and confining stress. Furthermore, the non-plastic fine ash was observed to increase the cyclic resistance of the pumice sand with respect to that of the same coarse matrix added with plastic clay. Finally, no appreciable evidences of grain crushing were detected on all tested soils containing pumice sand. © 2016 Taylor & Francis Group, London.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
