1 Gens A, Alonso E E. A framework for the behaviour of unsaturated expansive clays. Can Geotech J, 1992, 29: 1013-1032
[2]
2 Coleman J D. Stress-strain relations for partly saturated soils. Géotechnique, 1962, 12: 348-350
[3]
3 Bishop A W, Blight G E. Some aspects of the effective stress in saturated and partially saturated soils. Géotechnique, 1963, 13: 177-197
[4]
4 Derjaguin B V, Churaev N V, Muller V M. Surface Forces. New York: Plenum Press, 1987
[5]
6 Fredlund D G, Rahardjo H. Soil Mechanics for Unsaturated Soils. New York: John Wiley & Sons, 1993
[6]
7 Gens A. Soil-environment interactions in geotechnical engineering. Géotechnique, 2010, 60: 3-74
[7]
8 Alonso E E, Gens A, Hight D W. Special problem soils: General report. In: 9th European Conference on Soil Mechanics and Foundation Engineering, Dublin, Ireland, 1987. 1087-1146
[8]
10 Nowamooz H. Swelling/shrinkage of compacted and natural clayey soils (in French). Dissertation for the Doctoral Degree. Nancy: National Polytechnic Institute of Lorraine, 2007
[9]
11 Chen R. Experimental study and constitutive modeling of stress-dependent coupled hydraulic hysteresis and mechanical behaviour of an unsaturated soil. Dissertation for the Doctoral Degree. Hong Kong: The Hong Kong University of Science and Technology, 2007
32 Houlsby G T. The work input to an unsaturated granular material. Géotechnique, 1997, 47: 193-196
[20]
33 Borja R I, Koliji A. On the effective stress in unsaturated porous continua with double porosity. J Mech Phys Solids, 2009, 57: 1182-1193
[21]
34 Zhao C G, Liu Y, Gao F P. Work and energy equations and the principle of generalized effective stress for unsaturated soils. Int J Numer Anal Meth Geomech, 2010, 34: 920-936
[22]
35 Cai G Q, Zhao C G, Liu Y, et al. A nonlinear multi-field coupled model for soils. Sci China: Tech Sci, 2011, 54: 1300-1314
[23]
36 Li J, Zhao C G, Cai G Q, et al. The input work expression and the thermodynamics-based modelling framework for unsaturated expansive soils with double porosity. Chin Sci Bull, 2013, 58: 3422-3429
[24]
37 Baker R, Frydman S. Unsaturated soil mechanics: Critical review of physical foundations. Engng Geol, 2009, 106: 26-39
5 Tuller M, Or D, Dudley L M. Adsorption and capillary condensation in porous media: Liquid retention and interfacial configurations in angular pores. Water Resour Res, 1999, 35: 1949-1964
[27]
9 Romero E, Gens A, Lloret A. Water permeability, water retention and microstructure of unsaturated compacted boom clay. Engng Geol,1999, 54: 117-127
[28]
12 Wheeler S J, Sharma R S, Buisson M S R. Coupling of hydraulic hysteresis and stress-strain behaviour in unsaturated soils. Géotechnique,2003, 53: 41-54
[29]
13 Sheng D, Sloan S W, Gens A. A constitutive model for unsaturated soils: Thermomechanical and computational aspects. Comput Mech,2004, 33: 453-465
[30]
14 Liu Y, Zhao C G, Cai G Q, et al. Constitutive modeling for unsaturated soils considering gas hardening effect. Chin Sci Bull, 2011, 56:1739-1745
[31]
15 Cai G Q, Zhao C G, Liu Y, et al. Volume change behaviour of unsaturated soils under non-isothermal conditions. Chin Sci Bull, 2011, 56:2495-2504
[32]
16 Lu N, Likos W J. Suction stress characteristic curve for unsaturated soil. J Geotech Geoenviron Eng, 2006, 132: 131-142
[33]
17 Alonso E E, Romero E, Hoffmann C. Hydrome-chanical behaviour of compacted granular expansive mixtures: Experimental and constitutive study. Géotechnique, 2011, 61: 329-344
[34]
18 Gens A, Valleján B, Sánchez M, et al. Hydromechanical behaviour of a heterogeneous compacted soil: Experimental observations and modeling. Géotechnique, 2011, 61: 367-386
[35]
19 Alonso E E, Vaunat J, Gens A. Modelling the mechanical behaviour of expansive clays. Engng Geol, 1999, 54: 173-183
31 Zhao C G, Liu Z Z, Cai G Q. The principle of effective stress in unsaturated soil mechanics and its limitations. In: the 6th International Conference on Unsaturated Soils, Sydney, Australia, 2014. 167-175
