Unsaturated Soils: Proceedings of the Fifth International Conference on Unsaturated Soils, Barcelona, Spain, 6-8 September 2010

Unsaturated Soils: Proceedings of the Fifth International Conference on Unsaturated Soils, Barcelona, Spain, 6-8 September 2010

By: Eduardo E. Alonso (editor), Antonio Gens (editor)Hardback

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In recent decades the development of unsaturated soil mechanics has been remarkable, resulting in momentous advances in fundamental knowledge, testing techniques, computational procedures, prediction methodologies and geotechnical practice. The advances have spanned the full spectrum of theory and practice. In addition, unsaturated materials exhibiting complex behaviour such as residual soils, swelling soils, compacted soils, collapsing soils, tropical soils and solid wastes have been integrated in a common understanding of shared behaviour features. It is also noteworthy that unsaturated soil mechanics has proved surprisingly fruitful in expanding to other neighbouring areas such as swelling rocks, rockfill mechanics, and freezing soils. As a consequence, geotechnical engineering involving unsaturated soils can be now approached from a more rational and systematic perspective leading towards an improved and more effective practice. Unsaturated Soils contains the papers presented at the 5th International Conference on Unsaturated Soil (Barcelona, Spain, 6-8 September 2010). They report significant advances in the areas of unsaturated soil behaviour, testing techniques, constitutive and numerical modelling and applications. The areas of application include soil-atmosphere interaction, foundations, slopes, embankments, pavements, geoenviromental problems and emerging topics. They are complemented by three keynote lectures and three general reports covering general issues of modelling, testing and applications. Unsaturated Soils is a comprehensive record of the state-of-the art in unsaturated soil mechanics and a sound basis for further progress in the future. The two volumes will serve as an essential reference for academics, researchers and practitioners interested in unsaturated soils.

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Technical University of Catalonia (UPC) Barcelona, Spain Technical University of Catalonia (UPC), Barcelona, Spain


VOLUME 1 Keynote lectures Design of stiffened slabs-on-grade on shrink-swell soils J.-L. Briaud, R. Abdelmalak & X. Zhang Geotechnical and environmental models involving unsaturated soils and rocks S. Olivella Energy geotechnology: Implications of mixed fluid conditions J.C. Santamarina & J. Jang General reports Geotechnical problems and case histories from the perspective of unsaturated soil mechanics C.W.W. Ng & A.K. Leung Constitutive modelling of unsaturated soils: Discussion of fundamental principles D. Sheng Unsaturated soils: Compacted versus reconstituted states A. Tarantino Unsaturated soil behaviour Microstructure Development of microstructure in compacted earthen building materials C.T.S. Beckett & C.E. Augarde Evolution of meso-structure of intact loess during triaxial shear test X.-W. Fang, C.-N. Shen, Z.-H. Chen & Z.-B. Zhou A model for capillary pressure in unsaturated granular soils within the pendular saturation regime J.L. Justo & M. Vazquez An insight into role of clay-fluid molecular interactions on the microstructure and macroscale properties of swelling clays D.R. Katti, K.S. Katti, P.M. Amarasinghe & S.M. Pradhan Volume changes of swelling clayey soils at microscopic scale level T. Maison, F. Laouafa & J.-M. Fleureau Influence of the microstructure on the hydro-mechanical behaviour of a natural silty clay M.M.A. Mascarenha, M.P. Cordao-Neto & E. Romero Stress-strain and strength characteristics Hydro-mechanical response of an expansive silt-bentonite mixture M. Ajdari, H. Nowamooz, F. Masrouri, G. Habibagahi & A. Ghahramani Deformation behavior in unsaturated soils R. Baltodano-Goulding Collapse potential of a compacted weathered serpentinite from Skiros Island, Greece M. Bardanis & S. Grifiza Collapsibility study for tropical soil profile using oedometric tests with controlled suction J.C.B. Benatti, M.G. Miguel, R.A. Rodrigues & O.M. Vilar Stress path effects on shear stiffness, damping ratio and volumetric behaviour of normally consolidated unsaturated compacted clay M. Biglari, A. d'Onofrio, C. Mancuso, M.K. Jafari & A. Shafiee Shrinkage during wetting of fine-pored materials: Does this accord with the principle of effective stress? G.E. Blight Shear strength of an unsaturated silty sand F. Casini, P. Minder & S.M. Springman Dilatancy and shear strength of an aged compacted fill A.C.F. Chiu & X. Zhao An experimental study on the cyclic behavior of natural loess Y.-J. Cui, A.-M. Tang, J.P. Karam & J.M. Terpereau Inundation collapse strain and creep measurements for two Campanian pyroclastic soils P. De Simone Simple shear tests on unsaturated undisturbed specimens containing a weak layer J.L. Deng, H. Kameya, Y. Tsutsumi, J. Koseki & J. Kuwano Volume change behaviour due to moisture variation in vertisoil from a semiarid region in Pernambuco, Brazil S.R.M. Ferreira Constant water content triaxial compression tests with a compacted soil G.B. Georgetti & O.M. Vilar The relationship between the critical state shear strength of unsaturated soils and the soil-water characteristic curve J.A. Infante Sedano & S.K. Vanapalli Unsaturated shear strength parameters of tropical volcanic residual soils R. Karlinasari & P.P. Rahardjo Direct shear test under constant volume state for unsaturated soil S. Kato, B.S. Kim & S. Shibuya Effects of matric suction on elastic shear modulus for three unsaturated soils S. Kawajiri, S. Shibuya, S. Kato & T. Kawaguchi Mechanical behaviors and water retention characteristics of micro-porous ceramic particles produced by burning sludge J. Kawazu, K. Kawai, S. Kanazawa & A. Iizuka Effect of suction hysteresis on the shear strength of unsaturated soil interfaces C.N. Khoury & G.A. Miller Critical state behaviors of unsaturated soil in the direct shear test under constant pressure B.S. Kim, S. Kato & S. Shibuya The decrease of the strength of unsaturated silty sand and the Bishop's parameter J.C. Leal, G. Gallegos & E. Rojas Study on gas phase in unsaturated soils Y. Liu, C.G. Zhao & Q. Fang A new unsaturated direct shear apparatus for measuring shear strength of unsaturated soils Part 2: Results and comparison between plane strain and triaxial loading conditions A. Mirzaii, S.S. Yasrebi & E. Hefzi A constitutive relationship for collapsible soils in terms of stress state variables J.D. Nelson, C.N. Hatton & K.C. Chao Direct shear strength of compacted bentonite under different suctions T. Nishimura, H. Rahardjo & J. Koseki Investigation of the behavior of an unsaturated sand using a cyclic direct shear device T. Nishimura, I. Shahrour & H.B. Bian Pore pressure under undrained condition for compacted unsaturated silty soil having a low matric suction T. Nishimura & J. Koseki The relationship between the elastic and shear modulus of unsaturated soils W.T. Oh & S.K. Vanapalli Shear strength of a pyroclastic unsaturated soil from suction-controlled direct shear tests R. Papa & M.V. Nicotera Experimental study of the collapsible behavior of a tropical unsaturated soil R.A. Rodrigues & O.M. Vilar Swelling pressure evolution in compacted bentonite: Experiments and modelling M. Sanchez, M.V. Villar, R. Gomez-Espina, A. Lloret & A. Gens Constant volume triaxial compression tests on unsaturated soil prepared from slurry M. Shimizu & J. Terakata Assessment of the cv coefficient for unsaturated Warsaw Clay Z. Skutnik, M. Lendo-Siwicka & K. Garbulewski Laboratory investigations on static liquefaction potential of pyroclastic soils involved in rainfall-induced landslides of the flow-type G. Sorbino, G. Migliaro & V. Foresta Desorption and consolidation behaviour of initially saturated clays S. Tripathy, R. Bag & H.R. Thomas Compressive strength of unsaturated fissured clays L.E. Vallejo Effect of suction and plasticity on the shear strength of sand/silt mixtures M.V. Villar, P.L. Martin, R. Gomez-Espina & A. Lloret Experimental study on K0 coefficient of Ningming unsaturated expansive soil H.P. Yang, J. Xiao, G.F. Zhang & R. Zhang Experimental investigation of stress increment direction dependency of plastic flow in unsaturated soils S. Zargarbashi & N. Khalili Water retention and hydraulic behaviour Laboratory determination of Soil-Water Characteristic Curves for cracked soil M.M. Abbaszadeh, S. Houston, C. Zapata, W. Houston, B. Welfert & K. Walsh The void ratio dependency of the retention behaviour for a compacted clay C. Airo Farulla, A. Battiato & A. Ferrari Comparison between the in situ and laboratory water retention curves for a silty sand A. Askarinejad, F. Casini, P. Kienzler & S.M. Springman On the inverse problem solution for laboratory determination of unsaturated water hydraulic conductivities K.V. Bicalho, J.-M. Fleureau, Y.-J. Cui & C. Romanel Water retention curve and shrinkage of a waste from the paper industry J.C.O. Bizarreta & T.M.P. de Campos Soil-water characteristic curves obtained through the wetting paths for a tropical soil profile B.H. Bonder & M.G. Miguel An investigation on the effect of initial water content and dry density on drying soil-water characteristic curve of a cohesionless soil M. Chetia & S. Sreedeep A transfer function of a soil water characteristic curve model for sands E. Imre, K. Rajkai, R. Genovese & C. Jommi Prediction of soil-water characteristic curve using neural network A. Johari & A.A. Javadi Hysteresis between wetting and drying diffusivity parameters D. Mabirizi & R. Bulut A simple method to consider water density changes in the calculation of the degree of saturation of swelling clays D. Marcial Hydromechanical behaviour of a natural sand using different suction controlled techniques H. Nowamooz, M.I. Arsenie, C. Chazallon & F. Masrouri Investigations on water retention behaviour of deformable soils S. Salager, A. Ferrari, M. Nuth & L. Laloui Study on the soil-water characteristic curve including stresses of an unsaturated soil C.-N. Shen, X.-W. Fang, Z.-H. Chen & Z.-B. Zhou Unsaturated hydraulic characteristics of soil with significant oversize particles S. Somasundaram, T. Shenthan, C. Benson & S. Nannapaneni Unsaturated hydraulic properties of fine-grained soil from the blanket layer of old railway lines in France V.N. Trinh, A.-M. Tang, Y.-J. Cui, J.C. Dupla, J. Canou, N. Calon, A. Robinet, L. Lambert & O. Schoen Soil-Water Characteristic Curve (SWCC) and volumetric deformation law for a plastic clay under high suction M. Vazquez, P. Durand & J.L. Justo Atmospheric drying and laboratory wetting of stockpiled product coal D.J. Williams A study of the water retention characteristics and volume change of lime-treated London Clay X. Zhang, M. Mavroulidou, M.J. Gunn & Z. Cabarkapa Comparison of four methods for determining the soil water retention curve M. Zielinski, P. Sentenac, A. Atique, M. Sanchez & E. Romero Thermal and chemical effects Hydro-mechanical behavior of pre-heated bentonite Y.F. Arifin & T. Schanz Lime stabilisation of pyroclastic soils M. Cecconi, V. Pane, F. Marmottini, G. Russo, P. Croce & S. dal Vecchio Effect of temperature on collapse potential of kaolin clay A. Haghighi, G. Medero, P. Woodward & L. Laloui Influence of freeze-thaw action on mechanical behavior of unsaturated crushable volcanic soil T. Ishikawa, S. Miura & K. Itou Influence of temperature on the water retention capacity of soils analysis using solution thermodynamics A.C. Jacinto, A. Ledesma, M.V. Villar & R. Gomez-Espina Influence of temperature rise under undrained condition on the shear behavior of unsaturated sandy soil considering solubility of gaseous components Y. Katsuno, M. Iwabuchi, K. Ozawa, R. Uzuoka & M. Kazama Thermal pulse effects on the stiffness degradation of unsaturated clayey materials A. Lima, J.A. Pineda & E. Romero Effects of a microbiological compound for the stabilisation of compacted soils on their microstructure and hydro-mechanical behaviour L. Morales, E. Garzon, E. Romero & C. Jommi Influence analysis of the contaminants fluid in a compacted soil collapse E.Q. Motta & S.R.M. Ferreira Thermal damage in unsaturated geomaterials M.M. Kharazi, C. Arson & B. Gatmiri Thermo-hydro-mechanical behaviour of an expansive bentonite/silt mixture using different suction controlled techniques H. Nowamooz, R. Gomez-Espina, M.V. Villar & F. Masrouri Direct measurement of thermal expansion in unsaturated soils X. Pintado & A. Lloret Determining the thermal conductivity as a function of water content for a soil with different percentages of gravels C.M. Rubio, R. Josa, D.R. Cobos, C.S. Campbell & F. Ferrer Temperature effects on soil-water retention properties of densely compacted GMZ01 bentonite W.M. Ye, M. Wan, B. Chen, Y.-J. Cui & J. Wang Testing techniques: Laboratory, in situ and centrifuge Evaluation of filter paper calibrations for indirect determination of soil suctions of unsaturated soils K.V. Bicalho, F.A.M. Marinho, J.-M. Fleureau & A. Gomes Correia Useful laboratory guidelines for unsaturated soils research J.L. Boyd & V. Sivakumar Centrifuge modeling applied to swelling soils B. Caicedo & C. Segura Centrifuge modeling of soil atmosphere interaction B. Caicedo, J. Tristancho & L. Thorel Physical modelling on unsaturated soils using centrifuge B. Caicedo, J. Tristancho & L. Thorel Commentaries on the consolidation-swell test K.C. Chao, J.D. Nelson, D.D. Overton & E.J. Nelson Detecting water content changes in sand samples by means of Electrical Resistivity Tomography R.M. Cosentini, G. Della Vecchia, S. Foti & G. Musso Calibration of a TDR probe in an expansive soil S. Fityus & K. Rajkai Effective thermal conductivity of partially saturated soils S.S. Hamuda, M. Rouainia & B.G. Clarke A new unsaturated direct shear apparatus for measuring shear strength of unsaturated soils Part 1: Apparatus features and test procedures E. Hefzi, S.S. Yasrebi & A. Mirzaii Constitutive modeling of unsaturated soil behavior using a refined suction-controlled true triaxial cell: Preliminary observations L.R. Hoyos, D.D. Perez-Ruiz & A.J. Puppala Modeling unsaturated soil response under large deformations using a novel suction-controlled ring shear device L.R. Hoyos, C.L. Velosa & A.J. Puppala Small-strain stiffness of compacted silty sand using a proximitor-based suction-controlled resonant column device L.R. Hoyos, E.A. Suescun, J.A. Pineda & A.J. Puppala Efficient measurement of unsaturated hydraulic conductivity using a wetting front advancing method X. Li, L.M. Zhang & D.G. Fredlund Advances in tensiometer-based suction control systems S.D.N. Lourenco, D. Gallipoli, D.G. Toll, C.E. Augarde & F.D. Evans A new permeameter for the determination of the unsaturated coefficient of permeability M.P.H. Moncada & T.M.P. de Campos Suction measurements on a natural unsaturated soil: A reappraisal of the filter paper method J.A. Munoz-Castelblanco, J.-M. Pereira, P. Delage & Y.-J. Cui The use of filter paper method for field suction investigation M.G.G. Nacinovic, C.F. Mahler, R.L.S. Izzo, P.F.S. Brandt & A.S. Avelar The challenges of performing laboratory controlled cone penetration tests in unsaturated soils M. Pournaghiazar, A.R. Russell & N. Khalili Characterization of unsaturated zone susceptible to landslides in tropical volcanic residual soil with in-situ tests P.P. Rahardjo & R. Karlinasari Analysis of a drawdown test displaying the use of transparent soil in unsaturated flow applications G. Siemens, S. Peters & W.A. Take Calibration of Smart Irrigation Sensor (SIS-UMS) for the blanket layer soil from old railway lines V.N. Trinh, A.-M. Tang, Y.-J. Cui, J.C. Dupla, J. Canou, N. Calon, A. Robinet, L. Lambert & O. Schoen Wave velocity analysis of state parameter changes in multi-phase granular materials F. Wuttke, M. Asslan & T. Schanz A novel non-contacting laser displacement transducer technique for volume change measurements of unsaturated soils X. Zhang, M. Mavroulidou, M.J. Gunn, Z. Cabarkapa & J. Sutton VOLUME 2 Modelling Fundamentals and constitutive modelling Mechanical model for partially saturated sandy soils: Application to liquefaction H.B. Bian, T. Nishimura & I. Shahrour Saturation induced instability on bonded geomaterials G. Buscarnera & R. Nova On the definition of constitutive models for compacted soft rocks R. Cardoso & E.E. Alonso Effect of anisotropy on the prediction of unsaturated soil response under triaxial and oedometric conditions F. D'Onza, D. Gallipoli & S. Wheeler Modelling criteria for a microbiologically stabilised compacted soil in the framework of elastoplasticity G. Della Vecchia, L. Morales, E. Garzon, C. Jommi & E. Romero Some remarks on the hydro-mechanical constitutive modelling of natural and compacted Boom clay G. Della Vecchia, C. Jommi, A. Lima & E. Romero Soil water characteristic curves and adsorption potential S. Frydman & R. Baker Numerical simulations of the thermomechanical behavior of clays on volumetric and deviatoric paths M.S. Ghembaza, Z. Bellia & H. Trouzine Parameter calibration for hydro-mechanical modelling using numerical simulations of test results R. Gomez, E. Romero, A. Lloret, J. Suriol & C. Jommi Evaluation of a constitutive model for unsaturated soils: Stress variables and numerical implementation N.A. Gonzalez & A. Gens Prediction of the behaviour of unsaturated soils using evolutionary polynomial regression: An incremental approach A.A. Javadi, A. Johari, A. Ahangar-Asr, A. Faramarzi & D.G. Toll A fully coupled hysteretic finite element model for hydro-mechanical analysis of unsaturated soils N. Khalili, S. Zargarbashi & M.A. Habte A simple elasto-plastic model for unsaturated soils and interpretations of collapse and compaction behaviours M. Kikumoto, H. Kyokawa, T. Nakai & H.M. Shahin An introduction of jumped kinematic hardening rule to elastoplastic model for unsaturated geo-materials Y. Kohgo An effective stress based model for the dependency of a water retention curve on void ratio D. Masin Rotational multiple yield surface framework and the prediction of stress-strain response for saturated and unsaturated soils M.J. Md Noor & I.B. Mohamed Jais Laboratory modelling: Settlement due to groundwater fluctuation in partially saturated soil M.J. Md Noor, I.B. Mohamed Jais & J.D. Nyuin Hydraulic hysteresis coupled to volume change effects in unsaturated soil behavior M. Morvan, H. Wong & D. Branque Mapping soil-water profile utilizing non-linear neural network based model M. Mukhlisin, A. El-Shafie & M. Raihan Taha A fundamental interpretation of the critical state strength of unsaturated soils E.J. Murray & V. Sivakumar Determination of the effective stress parameter: A pore network study E. Nikooee, G. Habibagahi & A. Ghahramani Assessment of volumetric collapse using probabilistic approach I. Otalvaro Calle, M.P. Cordao-Neto & G.M. Medero Is the degree of saturation a good candidate for Bishop's parameter? J.-M. Pereira, O. Coussy, E.E. Alonso, J. Vaunat & S. Olivella On the time-dependent behaviour of unsaturated geomaterials J.-M. Pereira & V. De Gennaro A porous model based on porosimetry to simulate retention curves E. Rojas, G. Gallegos & J. Leal Modeling the tensile strength of soils E. Rojas, D. Hurtado, M.L. Perez-Rea & A. Zepeda Modelling the unsaturated behaviour of structured soils M. Rouainia & J.-M. Pereira Fractals, double porosity and the soil-water characteristic curve A.R. Russell Constitutive model developments for compacted unsaturated fine grained soils based on porosimetry R. Salgueiro, S. Olivella & J. Suriol Hydro-mechanical coupling for unsaturated soils D. Sheng & A.N. Zhou Simulation of static compaction with unsaturated soil/water coupled F.E. analysis M. Shibata, K. Kawai, S. Kanazawa, A. Iizuka, S. Tachibana, S. Ohno & M. Honda Elastoplastic modelling of hydraulic and mechanical behaviour of expansive soils D.A. Sun & W.J. Sun A constitutive model for cemented unsaturated soils and weak rocks R. Tamagnini, M. Mavroulidou & M.J. Gunn Constitutive model of unsaturated structured soils under cyclic loading C. Yang, M.S. Huang & Y.-J. Cui Hydraulic conductivity function for unsaturated cracked soil L.M. Zhang, J.H. Li & D.G. Fredlund Parameter identification in BBM using a parallel asynchronous differential evolution algorithm Y. Zhang, X.-T. Feng, D. Gallipoli & C. Augarde Use of results from undrained tests for the constitutive modeling of unsaturated soils X. Zhang Analytical and numerical modelling A driver for the integration of coupled hydro-mechanical constitutive laws for unsaturated soils F. Cattaneo, G. Della Vecchia & C. Jommi Numerical simulation of volume change of a swelling soil in the northeast of Brazil L.M. Costa, S.R.M. Ferreira, L. do N. Guimaraes & I.D.S. Pontes Filho A new analytical solution for one dimensional transient flow in unsaturated soils H. Farshbab Aghjani & A. Soroush Effect of mesh resolution on long-term water balance calculations M.D. Fredlund, R. Thode & R.G. Nelson Fully coupled analysis of unsaturated porous media using a meshfree method A. Khoshghalb & N. Khalili Two-dimensional fundamental solution for dynamic behaviour analysis of unsaturated soils P. Maghoul, B. Gatmiri & D. Duhamel Drying shrinkage and cracking initiation in clays: Main modeling concepts and application to the ventilation of a tunnel H. Peron, J. Eichenberger & L. Laloui Behaviour of an unsaturated soil column under loading and watering F. Salehnia & B. Gatmiri Comparison of the nonlinear elastic and elastoplastic models in THM response of unsaturated soils F. Salehnia & B. Gatmiri Explicit stress integration with reduced drift for Barcelona Basic Model W.T. Solowski, D. Sheng & S.W. Sloan Active earth force in 'cohesionless' unsaturated soils using bound theorems of plasticity S.A. Stanier & A. Tarantino Implicit integration of a constitutive model for partly saturated structured porous materials R. Tamagnini, M. Mavroulidou & M.J. Gunn Numerical simulation of an unsaturated slope failure during an earthquake R. Uzuoka, K. Maruyama, T. Mori, M. Kazama, T. Unno & N. Sento Engineering applications and case histories Soil-atmosphere interaction Influences of the soil-atmosphere interface interactions on the soil water content and temperature profiles K.V. Bicalho, G.P.D. Vivacqua & Y.-J. Cui An experimental root barrier to protect the foundations of a building from the desiccating effects of tree roots G.E. Blight Soil heat and evaporation from soil G.E. Blight A prototype soil column to calibrate numerical models accounting for soil-atmosphere interaction M. Caruso & C. Jommi Use of satellite observations for estimating the degree of saturation of superficial soils L. Montrasio, R. Valentino & C. Quintavalla Study of stratification resistant to salt damage S. Nomura, K. Kawai, S. Kanazawa, A. Iizuka, S. Ohno, P. Thirapong & S. Tachibana An environmental chamber for studying the soil-atmosphere interaction A.-N. Ta, A.-M. Tang, Y.-J. Cui & J. Thiriat Foundations Settlement prediction of cyclically loaded footings resting on partially saturated sand by means of a kinematic hardening model A. Becker Performance and design of foundations on unsaturated expansive soil J.T. Bryant & M.A. Haque Identification, characterization and analysis of deep foundation in collapsible soil-Regional Prison of Eunapolis, Bahia/Brazil R.Q. Coutinho, B.P.F. Castro & K.C.A. Dourado Pile horizontal bearing capacity in tropical soil under distinct moisture contents M.A. de Almeida, M.G. Miguel & S.H.C. Teixeira The effect of ripping clay soil on swell behaviour S. Fityus, O. Buzzi, M. Holt & T. Gunther Comparison of bearing capacity of unsaturated sand using Cone Penetration Tests (CPT) and Plate Load Tests (PLT) F.M.O. Mohamed, S.K. Vanapalli & M. Saatcioglu Water content profiles for design of foundations on expansive soils D.D. Overton, K.C. Chao & J.D. Nelson Bearing capacity of a strip footing on an unsaturated sand T. Schanz, Y. Lins & S.K. Vanapalli A simple technique for estimating the 1-D heave in expansive soils S.K. Vanapalli, L. Lu & W.T. Oh A technique for estimating the shaft resistance of test piles in unsaturated soils S.K. Vanapalli, K.D. Eigenbrod, Z.N. Taylan, C. Catana, W.T. Oh & E. Garven Bearing capacity of an unsaturated sand from model footing tests S.K. Vanapalli, R. Sun & X. Li Interpretation of the bearing capacity of unsaturated soils extending the effective and the total stress approaches S.K. Vanapalli & W.T. Oh Three dimensional numerical simulation of a residential building on expansive soil subject to a leaking underground X. Zhang Slopes Stochastic modelling of unsaturated slope stability P. Arnold & M.A. Hicks Influence of seasonable water pressure variations on unsaturated slopes stability F.A.J. Franch & M.M. Futai Shear and soil-water retention behaviour of a variably saturated residual soil and its implication on slope stability A. Jotisankasa & J. Tapparnich Back-analysis of infiltration characteristic of a saprolitic hillslope by considering permeability heterogeneity A.K. Leung & C.W.W. Ng The significance of curved shear strength envelope in modelling rainfall induced shallow failure of slopes M.J. Md Noor & B.A. Hadi The influence on the slope stability of the initial degree of saturation of a fill ground T. Mori, R. Uzuoka & M. Kazama Test site experience on mechanisms triggering mudflows in unsaturated pyroclastic soils in southern Italy M. Pirone, R. Papa & M.V. Nicotera Performance of an instrumented slope under a capillary barrier system H. Rahardjo, C.J. Hua, E.C. Leong & V.A. Santoso Matric suction in unsaturated pyroclastic slopes A. Scotto di Santolo & A. Evangelista Analysis of influencing factors in strengthening expansive soil slope with the coverage of geo-membrane J.P. Yuan, J.H. Wu & Z.Z. Yin Embankments Investigation of the water flow in an embankment built of organic soil: Experimental results and large scale field test E. Birle, M. Boso & D. Heyer Suction changes during the construction of an embankment from A10 Motorway in Portugal R. Cardoso, E. Maranha das Neves & P. Almeida Santos Influences of spatially varying porosity on unsaturated flow through earth structures T.M.H. Le, D. Gallipoli, S. Wheeler & M. Sanchez Improvement and controlling deformation of the expansive soil ground L. Miao, F. Wang & Y. Cui Failure of peat dykes by drought D. Nterekas, J.P. Oostveen, F.A.J.M. Mathijssen, R.B.J. Brinkgreve, M.A. Hicks & F. Molenkamp Numerical analysis of the behaviour of embankments constructed with expansive soils J.I. Ortega, A. Lloret, S. Olivella & E. Romero Banking simulation with a constitutive model for unsaturated soil M. Tanaka, K. Kawai, S. Kanazawa, A. Iizuka, S. Tachibana, S. Ohno & T. Takeyama Pavements Water migration in pavement subgrade E.J. Nelson & D.D. Overton Geoenvironmental applications Gas migration in sand/bentonite mixtures through preferential paths D. Arnedo, E.E. Alonso, S. Olivella & E. Romero Geotechnical issues in the design and construction of PMOBs A.R. Cabral, M. Letourneau, J.S. McCartney, J. Parks, E. Yanful & Q. Song Coupled solute mass transport and evaporation in saline soil A.S. Dunmola & P.H. Simms Non-isothermal infiltration in plastic bentonite B. Francois & L. Laloui Numerical modelling of the resaturation of swelling clay with gas injection P. Gerard, J.-P. Radu, J. Talandier, R. de La Vaissiere, R. Charlier & F. Collin THMC analysis of saturation and heating processes of an expansive clay barrier in radioactive waste isolation L. do N. Guimaraes, A. Gens, M. Sanchez & S. Olivella Laboratory studies of the addition of bentonite to landfill cover soil R.L.S. Izzo, C.F. Mahler & K. Huse Thermal-hydro-mechanical behavior of unsaturated bentonite blocks: Experimental approaches J.O. Lee, W.J. Cho, S.K. Kwon & J.W. Choi Water infiltration and methane emission through three different cover layers of an experimental Municipal Waste Landfill at Muribeca, Recife, Pernambuco, Brazil R.L. Lopes, M.C.M. Alves & J.F.T. Juca Evaluation of landfill gas emission in experimental cover layers in Brazil F.J. Maciel, R.L. Lopes & J.F.T. Juca Behaviour of wet fill using residual soil F.A.M. Marinho & F. Massad Unsaturated behaviour of mine tailings in low precipitation areas L.A. Oldecop, L. Garino, J.J. Munoz, R. Rodriguez & C. Garcia Evaluation of a capillary barrier at the Rocky Mountain Arsenal L.O. Williams, D.L. Hoyt, G.A. Hargreaves, S.F. Dwyer & J.G. Zornberg Numerical study on rainfall infiltration into landfill earthen final cover T.L.T. Zhan, G.W. Jia, Y.M. Chen & D.G. Fredlund New areas LNAPL retention in partially saturated silty sand M. Alferi, E. Romero, A. Dominijanni & M. Manassero Water retention curve for evolving marl under suction cycles R. Cardoso, G. Della Vecchia, C. Jommi & E. Romero Effects of crude oil pollution on the shear strength behaviour of an unsaturated porous soil medium M. Mohammadi, S.S. Yasrebi & A. Mirzaii Effects of hydraulic cycling on the stiffness response of a rigid clay J.A. Pineda, G. Mitaritonna, E. Romero & M. Arroyo Effect of drying and wetting cycles on the shear strength of argillaceous rocks R.D. Tovar & J.E. Colmenares Pore geometry induced suction and the slaking of shales L.E. Vallejo & A. Stewart-Murphy Influence of suction on the mechanical behaviour of rock joints under shear loading M.T. Zandarin, E. Alonso & S. Olivella

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