The characterisation of unsaturated intermediate and coarse-grained soils faces some practical difficulties because undisturbed sampling is not easy. Geophysical methods provide useful information as they can be applied on site for testing geo-materials in their natural state. Moreover their repeated application over time is effective and efficient for monitoring purposes. A procedure for evaluating porosity and degree of saturation on the basis of electrical resistivity and wave velocities measurements is proposed. The approach is based on an electro-seismic model that utilises Archie’s law to describe the electrical behaviour of soils and a recent formulation of elastic wave propagation in unsaturated soils. The proposed procedure is applied to laboratory data, and shows promising results.
Evaluation of porosity and degree of saturation from seismic and electrical data / Cosentini R.M.; Foti S.. - In: GEOTECHNIQUE. - ISSN 0016-8505. - STAMPA. - 64:4(2014), pp. 278-286. [10.1680/geot.13.P.075]
|Titolo:||Evaluation of porosity and degree of saturation from seismic and electrical data|
|Data di pubblicazione:||2014|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1680/geot.13.P.075|
|Appare nelle tipologie:||1.1 Articolo in rivista|