Modelling of imbibition process in an embankment scale model
1 Sapienza Università di Roma, Dipartimento di Ingegneria Strutturale e Geotecnica, 00184 Roma, Italia
2 Università degli Studi di Roma Tor Vergata, Dipartimento di Ingegneria Civile e Ingegneria Informatica, 00173, Roma, Italia
3 Sapienza Università di Roma, Dipartimento Ingegneria Chimica Materiali Ambiente, 00184 Roma, Italia
a Corresponding author: email@example.com
This paper aims to investigate the hydro-mechanical behaviour of a loosely compacted embankment during an inundation event. This study is based on the results of a centrifuge test carried out on a small-scale embankment model made of an artificially compacted clay–sand mixture. The wetting-induced displacements are analyzed and interpreted by means of a constitutive model adapted to unsaturated conditions. The numerical predictions are presented in terms of time evolutions of settlements, as well as, spatial distributions of vertical displacements. These profiles are compared to those experimentally observed in order to validate the predictive capabilities of the model on a boundary value problem. Moreover, the stress paths followed by elementary soil elements located at different depths are analyzed to emphasize the stress and strain variations due to capillary rise.
© The Authors, published by EDP Sciences, 2016
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