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Exploring Static Instability Behavior of Sand-Fines Mixtures Based on Different State Variables / Porcino, Daniela Dominica; Tomasello, G. - 40:(2020), pp. 592-599. [10.1007/978-3-030-21359-6_63]

Exploring Static Instability Behavior of Sand-Fines Mixtures Based on Different State Variables

PORCINO, Daniela Dominica
Writing – Original Draft Preparation
;
2020-01-01
2020
Inglese
Calvetti F., Cotecchia F., Galli A., Joammi C.
40
Springer
Geotechnical Research for Land Protection and Development. Lecture Notes in Civil Engineering. Proc. of CNRIG 2019.
592
599
8
978-3-030-21359-6
http://hdl.handle.net/20.500.12318/107622
Calvetti F., Cotecchia F.,Galli A. & Jommi C.
ITALIA
Comitato scientifico
Sì
The paper presents a study aimed at evaluating the effect of non-plastic fines on undrained static liquefaction and instability behavior of silty sands considering two different state variables: (global) void ratio (eo) and equivalent granular void ratio (e*). The last parameter was introduced as an alternative index for mixed soils with a “sand-dominated” fabric. Undrained monotonic triaxial tests were carried out on Ticino sand-silt mixtures (FC = 0–30%) for a wide range of initial void ratios and mean effective confining stresses. The study provides evidence that, when the (global) void ratio is used as the comparison basis, the effect of fines is to cause an increase in the degree of contractiveness and higher susceptibility to collapse. Nevertheless, when the comparison is made at constant equivalent granular void ratio, undrained shear behavior and collapsibility of the silty sands are closely related to e*, which appears an effective index for unifying the response of mixed soils with varying fines content. © Springer Nature Switzerland AG 2020.
Nazionale
2-s2.0-85068160839
No
info:eu-repo/semantics/bookPart
Porcino, Daniela Dominica; Tomasello, G
2 Contributo in Volume::2.1 Contributo in volume (Capitolo o Saggio)
2
268
Exploring Static Instability Behavior of Sand-Fines Mixtures Based on Different State Variables / Porcino, Daniela Dominica; Tomasello, G. - 40:(2020), pp. 592-599. [10.1007/978-3-030-21359-6_63]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12318/11516
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