6533b7dafe1ef96bd126e3c1
RESEARCH PRODUCT
Water retention behaviour of compacted and reconstituted scaly clays
Marco RosoneAlessio Ferrarisubject
Materials scienceSuctionmicrostructure0211 other engineering and technologiesconstitutive model02 engineering and technology010502 geochemistry & geophysics01 natural sciencessoilmedicineComposite materialshear-strengthlcsh:Environmental sciences021101 geological & geomatics engineering0105 earth and related environmental sciencesVolumetric shrinkagecompacted claylcsh:GE1-350HygrometersuctionSettore ICAR/07 - GeotecnicaMicrostructureExperimental researchWater retentionVoid ratioDew pointremoulded clayWater retention behaviourmedicine.symptomdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 |