INTECIN 20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Experimental investigation and constitutive modelling for an unsaturated pyroclastic soil
Autor/es:
S. CUOMO; M. MOSCARIELLO; V. FORESTA; D. MANZANAL; M. PASTOR
Lugar:
Ichia
Reunión:
Conferencia; International Workshop on Volcanic Rocks & Soils; 2015
Institución organizadora:
Azociacione Geotecnica Italiana
Resumen:
The paper deals with the mechanical behaviour of an unsaturated air-fall volcanic (pyroclastic)soil, originated by the explosive eruptions of the Vesuvius volcano in southern Italy. Some experimental laboratorytests are described with special reference to the Water Retention Curve (WRC) and the Critical StateLine (CSL); and, a series of wetting-collapse suction-controlled oedometric tests are illustrated. Then, a GeneralizedPlasticity constitutive model is calibrated referring both the WRC and CSL, and is used to simulatethe experimental results of the wetting-collapse tests. The numerical results match the experimental evidencesreasonably well, because the constitutive model properly simulates the suction-related bonding effect amongthe solid grains.
