A model of combined oedometer and tensiometer for laboratory examination of the behaviour of rebuilded samples of swelling soils is presented. It allows registration of simultaneous variation of mechanical stress (overburden potential) and water potential (poral water pressure or interstitial water pressure). The measurement of the uptake as well as the release of water from the sample are obtained through continuous weight determinations of the water content in a beacker tank. Issues from any eventual air release in the hydraulic system (through air trap) and loss by evaporation both at the beaker tank and from the upper side of the soil sample are faced and discussed.
CAVAZZA L., GUARNIERI A., PATRUNO A., LORENZINI G., CIRILLO E. (2005). EDOTENSIOMETRO DA LABORATORIO. RIVISTA DI INGEGNERIA AGRARIA, 4, 57-63.
EDOTENSIOMETRO DA LABORATORIO
GUARNIERI, ADRIANO;PATRUNO, ANTONIA;LORENZINI, GIULIO;CIRILLO, ELIO
2005
Abstract
A model of combined oedometer and tensiometer for laboratory examination of the behaviour of rebuilded samples of swelling soils is presented. It allows registration of simultaneous variation of mechanical stress (overburden potential) and water potential (poral water pressure or interstitial water pressure). The measurement of the uptake as well as the release of water from the sample are obtained through continuous weight determinations of the water content in a beacker tank. Issues from any eventual air release in the hydraulic system (through air trap) and loss by evaporation both at the beaker tank and from the upper side of the soil sample are faced and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
