The paper presents the results of an experimental research devoted to investigate the response to suction variations of a scaly clay in compacted and reconstituted conditions. Different experimental techniques (axis translation, vapour equilibrium, dew point psychrometer suction measurements) were combined in order to explore the water retention properties in a wide suction range (0 ÷ 110 MPa). Experimental results allowed to define the water retention domains for a constant reference void ratio, highlighting the significant role of the microstructure on the response of the investigated clays. In particular, the collected results showed that in the low-medium suction range, the peculiar microstructural features give to the reconstituted clay a better retention capability than the compacted clay. However, the increasing suction induces a significative volumetric shrinkage on the saturated reconstituted clay, especially when the latter is initially normally consolidated. On the other hand, quite similar retention properties were recognized in the high suction range.

Rosone, M., & Ferrari, A. (2020). Water retention behaviour of compacted and reconstituted scaly clays. E3S WEB OF CONFERENCES, 195, 03026 [10.1051/e3sconf/202019503026].

Water retention behaviour of compacted and reconstituted scaly clays

Rosone, Marco
;
Ferrari, Alessio
2020

Abstract

The paper presents the results of an experimental research devoted to investigate the response to suction variations of a scaly clay in compacted and reconstituted conditions. Different experimental techniques (axis translation, vapour equilibrium, dew point psychrometer suction measurements) were combined in order to explore the water retention properties in a wide suction range (0 ÷ 110 MPa). Experimental results allowed to define the water retention domains for a constant reference void ratio, highlighting the significant role of the microstructure on the response of the investigated clays. In particular, the collected results showed that in the low-medium suction range, the peculiar microstructural features give to the reconstituted clay a better retention capability than the compacted clay. However, the increasing suction induces a significative volumetric shrinkage on the saturated reconstituted clay, especially when the latter is initially normally consolidated. On the other hand, quite similar retention properties were recognized in the high suction range.
Settore ICAR/07 - Geotecnica
4th European Conference on Unsaturated Soils (E-UNSAT 2020)
19-21 ottobre 2020
Rosone, M., & Ferrari, A. (2020). Water retention behaviour of compacted and reconstituted scaly clays. E3S WEB OF CONFERENCES, 195, 03026 [10.1051/e3sconf/202019503026].
File in questo prodotto:
File Dimensione Formato  
e3sconf_e-unsat2020_03026.pdf

accesso aperto

Tipologia: Versione Editoriale
Dimensione 1.94 MB
Formato Adobe PDF
1.94 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/439307
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 2
social impact