Water retention behaviour of compacted and reconstituted scaly clays

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Abstract

The paper presents the results of an experimental research devoted to investigate the response tosuction variations of a scaly clay in compacted and reconstituted conditions. Different experimentaltechniques (axis translation, vapour equilibrium, dew point psychrometer suction measurements) werecombined 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 giveto the reconstituted clay a better retention capability than the compacted clay. However, the increasingsuction induces a significative volumetric shrinkage on the saturated reconstituted clay, especially when thelatter is initially normally consolidated. On the other hand, quite similar retention properties wererecognized in the high suction range.
Lingua originaleEnglish
pagine (da-a)03026-
Numero di pagine7
RivistaE3S Web of Conferences
Volume195
Stato di pubblicazionePublished - 2020

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