Agnolin, I. & Roux, J. N. (2007). Internal states of model isotropic granular packings. I. Assembling process, geometry, and contact networks. Phys. Rev. E - Statist., Nonlinear, Soft Matter Phys. 76, No. 6, 1-27, https://doi.org/10.1103/ PhysRevE.76.061302.
Alonso, E. E., Vaunat, J. & Gens, A. (1999). Modelling the mechanical behaviour of expansive clays. Engng Geol. 54, No. 1-2, 173-183, https://doi.org/10.1016/S0013-7952(99) 00079-4.
Alonso, E. E., Romero, E. & Hoffmann, C. (2011). Hydromechanical behaviour of compacted granular expansive mixtures: experimental and constitutive study. Géotechnique 61, No. 4, 329-344, https://doi.org/10.1680/geot.2011.61.4.329.
Blatz, J. A., Graham, J. & Chandler, N. A. (2002). Influence of suction on the strength and stiffness of compacted sandbentonite. Can. Geotech. J. 39, No. 5, 1005-1015, https:// doi.org/10.1139/t02-056.
Cardoso, R., Alonso, E. E. & Maranha das Neves, E. (2013). A constitutive model for compacted expansive and bonded marls. Géotechnique 63, No. 13, 1116-1130, https://doi.org/ 10.1680/geot.12.P.101.
Carrier, B., Vandamme, M., Pellenq, R. J. M., Bornert, M., Ferrage, E., Hubert, F. & Van Damme, H. (2016). Effect of water on elastic and creep properties of self-standing clay films. Langmuir 32, No. 5, 1370-1379.
Cundall, P. & Strack, O. (1979). A discrete numerical model for granular assemblies. Géotechnique 29, No. 1, 47-65, https://doi.org/10.1680/geot.1979.29.1.47.
Delage, P., Marcial, D., Ruiz, X. & Cui, Y. J. (2006). Ageing effects in a compacted bentonite: a microstructure approach. Géotechnique 56, No. 5, 291-304, https://doi.org/10.1680/ geot.2006.56.5.291.
Gens, A., Valleján, B., Sánchez, M., Imbert, C., Villar, M. V. & Van Geet, M. (2011). Hydromechanical behaviour of a heterogeneous compacted soil: experimental observations and modelling. Géotechnique 61, No. 5, 367-386, https://doi.org/ 10.1680/geot.SIP11.P.015.
Hoffmann, C., Alonso, E. E. & Romero, E. (2007). Hydro-mechanical behaviour of bentonite pellet mixtures. Phys. Chem. Earth 32, No. 8-14, 832-849, https://doi.org/ 10.1016/j.pce.2006.04.037.
Imbert, C. & Villar, M. V. (2006). Hydro-mechanical response of a bentonite pellets/powder mixture upon infiltration. Appl. Clay Sci. 32, No. 3-4, 197-209, https://doi.org/10.1016/j.clay. 2006.01.005.
Johnson, K. L. (1985). Contact mechanics. Cambridge, UK: Cambridge University Press, https://doi.org/10.1115/1.3261297.
Koliji, A., Laloui, L. & Vulliet, L. (2010). Constitutive modeling of unsaturated aggregated soils. Int. J. Numer. Anal. Meth. 34, No. 17, 1846-1876, https://doi.org/10.1002/nag.888.
Kröhn, K. P. (2005). New evidence for the dominance of vapour diffusion during the re-saturation of compacted bentonite. Engng Geol. 82, No. 2, 127-132, https://doi.org/10.1016/ j.enggeo.2005.09.015.
Lee, F. H., Lee, Y., Chew, S. H. & Yong, K. Y. (2005). Strength and modulus of marine clay-cement mixes. J. Geotech. Geoenviron. Engng 131, No. 2, 178-186, https://doi.org/10.1061/(ASCE) 1090-0241(2005)131:2(178).
Lloret, A., Villar, M. V., Sanchez, M., Gens, A., Pintado, X. & Alonso, E. (2003). Mechanical behaviour of heavily compacted bentonite under high suction changes. Géotechnique 53, No. 1, 27-40, https://doi.org/10.1680/geot.53.1.27.37258.
Molinero-Guerra, A., Mokni, N., Delage, P., Cui, Y. J., Tang, A. M., Aimedieu, P. & Bornert, M. (2017). In-depth characterisation of a mixture composed of powder/pellets MX80 bentonite. Appl. Clay Sci. 135, 538-546, https://doi.org/ 10.1016/j.clay.2016.10.030.
Molinero-Guerra, A., Aimedieu, P., Bornert, M., Cui, Y. J., Tang, A. M., Sun, Z., Mokni, N., Delage, P. & Bernier, F. (2018a). Analysis of the structural changes of a pellet/powder bentonite mixture upon wetting by X-ray computed microtomography. Appl. Clay Sci. 165, 164-169, https://doi.org/:10.1016/ j.clay.2018.07.043.
Molinero-Guerra, A., Cui, Y. J., Mokni, N., Delage, P., Bornert, M., Aimedieu, P., Tang, A. M. & Bernier, F. (2018b). Investigation of the hydro-mechanical behaviour of a pellet/powder MX80 bentonite mixture using an infiltration column. Engng Geol. 243, 18-25.
Roux, J. N. & Chevoir, F. (2005). Généralités sur la simulation numérique discrète des matériaux granulaires. Bulletin des Laboratoires des Ponts et Chaussées 254, 109-138 (in French).
Saiyouri, N., Tessier, D. & Hicher, P. Y. (2004). Experimental study of swelling in unsaturated compacted clays. Clay Miner. 39, No. 4, 469-479, https://doi.org/10.1180/0009855043940148.
Tang, A. M. & Cui, Y. J. (2005). Controlling suction by the vapour equilibrium technique at different temperatures and its application in determining the water retention properties of MX80 clay. Can. Geotech. J. 42, No. 1, 287-296, https://doi.org/ 10.1139/t04-082.
Tang, A. M. & Cui, Y. J. (2009). Modelling the thermomechanical behaviour of compacted expansive clays. Géotechnique 59, No. 3, 185-195, https://doi.org/10.1680/ geot.2009.59.3.185.
Than, V. D., Khamseh, S., Tang, A. M., Pereira, J. M., Chevoir, F. & Roux, J. N. (2017). Basic mechanical properties of wet granular materials: a DEM study. J. Engng Mech. 143, No. 1, C4016001, https://doi.org/10.1061/(ASCE)EM.1943-7889.0001043.
Van Geet, M., Volckaert, G. & Roels, S. (2005). The use of microfocus X-ray computed tomography in characterising the hydration of a clay pellet/powder mixture. Appl. Clay Sci. 29, No. 2, 73-87, https://doi.org/10.1016/j.clay.2004. 12.007.
Volckaert, G., Bernier, F., Alonso, E. E., Gens, A., Samper, J., Villar, M. V., Martin-Martin, P. L., Cuevas, J., Campos, R., Thomas, H., Imbert, C. & Zingarelli, V. (1996). Thermalhydraulic- mechanical and geochemical behaviour of the clay barrier in radioactive waste repositories (model development and validation), EUR 16744 EN. Luxembourg: Publications of the European Communities.
Wiebe, B., Graham, J., Tang, G. X. & Dixon, D. (1998). Influence of pressure, saturation, and temperature on the behaviour of unsaturated sand-bentonite. Can. Geotech. J. 35, 194-205, https://doi.org/10.1139/t97-093.
Zeh, R. M. & Witt, K. J. (2007). The tensile strength of compacted clays as affected by suction and soil structure. Exp. Unsaturated Soil Mech. 112, 219-226, https://doi.org/10.1007/ 3-540-69873-6-21.
