Benchmark of experimental techniques for measuring and controlling suction

A. Tarantino, D. Gallipoli, C. E. Augarde, V. De Gennaro, R. Gomez, L. Laloui, C. Mancuso, G. El Mountassir, J. J. Munoz, J. M. Pereira, H. Peron, G. Pisoni, E. Romero, A. Raveendiraraj, J. C. Rojas, D. G. Toll, S. Tombolato, S. Wheeler

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Resumen

The paper presents a benchmarking study carried out within the 'Mechanics of Unsaturated Soils for Engineering' (MUSE) network aimed at comparing different techniques for measurement and control of suction. Techniques tested by the eight 'Mechanics of Unsaturated Soils for Engineering' research teams include axis-translation (pressure plate and suction-controlled oedometer), high-capacity tensiometer and osmotic technique. The soil used in the exercise was a mixture of uniform sand, sodium bentonite (active clay) and kaolinite (non-active clay), which were all commercially available. Samples were prepared by one team and distributed to all other teams. They were normally consolidated from slurry under one-dimensional conditions (consolidometer) to a given vertical stress. The water retention characteristics of the initially saturated specimens were investigated along the main drying path. Specimens were de-saturated by applying suction through the liquid phase when using an axis-translation technique or osmotic method and de-saturated by air-drying, when suction was measured using high-capacity tensiometers. In general, the same technique was tested by at least two teams. The water retention curves obtained using the different techniques are compared and discrepancies are discussed in the paper.

Idioma originalInglés
Título de la publicación alojadaPartial Saturation in Compacted Soils
Subtítulo de la publicación alojadaGeotechnique Symposium in Print 2011
Páginas129-138
Número de páginas10
EstadoPublicada - 29 may 2013
Evento16th Geotechnique Symposium 2011: Partial Saturation in Compacted Soils - London, Reino Unido
Duración: 20 jun 201120 jun 2011

Otros

Otros16th Geotechnique Symposium 2011: Partial Saturation in Compacted Soils
PaísReino Unido
CiudadLondon
Período20/06/1120/06/11

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    Tarantino, A., Gallipoli, D., Augarde, C. E., De Gennaro, V., Gomez, R., Laloui, L., Mancuso, C., El Mountassir, G., Munoz, J. J., Pereira, J. M., Peron, H., Pisoni, G., Romero, E., Raveendiraraj, A., Rojas, J. C., Toll, D. G., Tombolato, S., & Wheeler, S. (2013). Benchmark of experimental techniques for measuring and controlling suction. En Partial Saturation in Compacted Soils: Geotechnique Symposium in Print 2011 (pp. 129-138)