Swelling pressure evolution in compacted bentonite: Experiments and modelling

M. Sánchez, M. V. Villar, R. Gómez-Espina, A. Lloret, A. Gens

Resultado de la investigación: Conference contribution

1 Cita (Scopus)

Resumen

This work presents experimental results about the saturation of bentonite under constant volume and the simultaneous development of swelling pressure. The tests have been performed at room temperature under conditions of free availability of liquid water. Water intake and swelling pressure development were measured. The tests have been performed with a bentonite compacted to dry densities between 1.4 and 1.7 g/cm 3. The results obtained show that swelling pressure does not develop in a uniform way, but present more that one swelling stage. After a sharp initial increase, there is a period of time in which pressure increases more slowly or-for the lower densities-even decreases. This behaviour has also been detected in other clays and can be explained as a consequence of the complex fabric of this material, with the typical double porosity observed in expansive clays. A double structure framework specifically developed to analyse the behaviour of swelling clays has been used in this work to model the swelling pressure evolution of the FEBEX bentonite.

Idioma originalEnglish
Título de la publicación alojadaUnsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils
Páginas359-364
Número de páginas6
Volumen1
EstadoPublished - 2011
Evento5th International Conference on Unsaturated Soils - Barcelona, Spain
Duración: 6 sep 20108 sep 2010

Other

Other5th International Conference on Unsaturated Soils
PaísSpain
CiudadBarcelona
Período6/09/108/09/10

Huella dactilar

bentonite
swelling
modeling
clay
experiment
dry density
porosity
ambient temperature
water
testing
liquids
saturation
liquid
temperature

ASJC Scopus subject areas

  • Soil Science

Citar esto

Sánchez, M., Villar, M. V., Gómez-Espina, R., Lloret, A., & Gens, A. (2011). Swelling pressure evolution in compacted bentonite: Experiments and modelling. En Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils (Vol. 1, pp. 359-364)
Sánchez, M. ; Villar, M. V. ; Gómez-Espina, R. ; Lloret, A. ; Gens, A. / Swelling pressure evolution in compacted bentonite : Experiments and modelling. Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils. Vol. 1 2011. pp. 359-364
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Sánchez, M, Villar, MV, Gómez-Espina, R, Lloret, A & Gens, A 2011, Swelling pressure evolution in compacted bentonite: Experiments and modelling. En Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils. vol. 1, pp. 359-364, 5th International Conference on Unsaturated Soils, Barcelona, Spain, 6/09/10.

Swelling pressure evolution in compacted bentonite : Experiments and modelling. / Sánchez, M.; Villar, M. V.; Gómez-Espina, R.; Lloret, A.; Gens, A.

Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils. Vol. 1 2011. p. 359-364.

Resultado de la investigación: Conference contribution

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Sánchez M, Villar MV, Gómez-Espina R, Lloret A, Gens A. Swelling pressure evolution in compacted bentonite: Experiments and modelling. En Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils. Vol. 1. 2011. p. 359-364