Advances in Unsaturated Soils

Preface
Organization committees
Acknowledgements
Sponsors

Keynotes lectures

Interactions between atmosphere and geosphere—difficulties in measuring evaporation
G.E. Blight

Interpretation of soil-water characteristic curves when volume change occurs as soil suction is changed
D.G. Fredlund & S.L. Houston

Ventilation effects in an argillaceous rock tunnel examined via unsaturated soil mechanics
A. Gens & B. Garitte

Compacted soils: From physics to hydraulic and mechanical behaviour
S. Leroueil & D.W. Hight

Rockfill mechanics
L.A. Oldecop & E.E. Alonso

Unsaturated soil mechanics in the design and performance of pavements
H. Sahin, F. Gu, Y. Tong, R. Luo & R.L. Lytton

Estimation of the 1-D heave of a natural expansive soil deposit with a light structure using the modulus of elasticity based method
S.K. Vanapalli & H.H. Adem

Advances in testing techniques

Physical modelling of the effect of partial saturation on the stability of geocell walls
D. Gómez

Calibration in the laboratory of capacitance sensors for water content monitoring
F. Avanzi, M. Caruso & C. Jommi

Unsaturated soil response under plane strain conditions via true triaxial testing
L.R. Hoyos, J.A. Cruz & A. Lizcano

Measuring water retention properties of a series of bentonite clays in a wide range of suctions
D. Marcial

Physical modeling of the mechanical improvement of unsaturated silt through heating
C.J.R. Coccia, A. Casady & J.S. McCartney

Triaxial cell for nonisothermal shear strength of compacted silt under high suction magnitudes
N.A. Alsherif & J.S. McCartney

Measurement of friction on piles over neutral plane in expansive soils
C. Mendoza

On the use of unsaturated properties of a sandy material for centrifuge model preparation
W.F. Morales, J. Laue & S.M. Springman

Application of electrical resistivity for the control of water content and density in loess
V. Rinaldi

A method for making a homogeneous specimen of unsaturated clay using micro-wave
H. Suzuki, Y. Okano, K. Ueno & R. Uzuoka

Centrifuge modelling of wetting-induced collapse in embankment base
L. Thorel, I.M. Khokhar, V. Ferber & B. Caicedo

A practical method for suction estimation in unsaturated soil testing
M.F. Amaral, A.V. da Fonseca, E. Romero & M. Arroyo

Preparing unsaturated samples of decomposed granite for laboratory controlled CPTs
H. Yang & A.R. Russell

Estimating soil hydraulic parameters from capillary rise tests
T.C. Zapata & O.M. Vilar

Geophysical investigation of cracking in unsaturated soils
G. Jones, M. Zielinski & P. Sentenac

Unsaturated soil behavior

Water retention behavior and hydraulic properties

Preferential flow and mass transport modeling in a heterogeneous unsaturated soil
L.B. Bien, R. Angulo-Jaramillo, D. Predelus, L. Lassabatere & T. Winiarski

Influence of cracks on soil water characteristic curve
S. Azam, M. Ito & F. Khan

Influence of suction on the permeability of unsaturated soils
B. Melbouci & F. Ghanem

Evaluation of the suction calibration curves for Whatman 42 filter paper
K.V. Bicalho, K.F. Cupertino & A.I. Bertolde

Soil water characteristic curves of lime-treated highly expansive soils
T.Y. Elkady & A.M. Al-Mahbashi

Water retention properties of a demolition waste
A.M.J. Gómez, M.M. Farias, M.P. Cordão-Neto, M.V.R. Souza & I.F. Otálvaro

Water infiltration in final cover layer of landfills in northeast region of Brazil
R.L. Lopes, J.F.T. Jucá & M.O.H. Mariano

Water retention properties of a residual soil from Caracas
A. Luis & D. Marcial

Air permeability of cover soil from the Bandeirantes landfill in São Paulo, Brazil
F.A.M. Marinho & P.F. Teixeira

Water retention curves for a tropical soil contaminated by vinasse
M.G. Miguel & S.Y. Pereira

Permeability studies with blend of fly Ash and Rice Husk Ash stabilized soil subgrade
N.L. Patil, S. Sharma & H. Sood

Capillary rise in pores with rough walls
L.E. Vallejo

Volumetric and elastic behavior

Multi-dimensional swelling behavior of Al-Qatif expansive soils
M.F. Abbas, T.Y. Elkady & M.A. Al-Shamrani

Soil characterization and compressibility parameters of Bogotá clay due to suction changes
G.E. Ávila, A. Ledesma & A. Lloret

Cyclic behavior of unsaturated unbound aggregates for pavements
B. Caicedo, O. Coronado, J.M. Fleureau & A. Gomes-Correia

Small strain shear modulus of an unsaturated sandy soil
G.B. Georgetti & O.M. Vilar

Swelling behavior of expansive clays incorporating mineralogy and pore size distribution via SWCC
A. Pedarla, A.J. Puppala & L.R. Hoyos

Drying-wetting tests on sand—silt mixtures: Impact of volumetric changes on the retention curves
M. Morvan, D. Branque, H. Wong & B. Colin

Collapse behaviour of a natural loess from Northern France
J.A. Muñoz-Castelblanco, P. Delage, J.M. Pereira & Y.J. Cui

Elastic response of unsaturated soils
C. Murillo, B. Caicedo, L. Thorel & C. Dano

Evaluation of soil matric suction, microstructure and its influence on collapsible behavior
J. Ramos & Y. Valencia

An experimental study on the stiffness of a lime-treated clayey soil
A.M. Tang, M.N. Vu & Y.J. Cui

Effects of relative humidity cycling on the hydro-mechanical behaviour of two clayey rocks from North-East Spain
J.A. Pineda & E. Romero

Laboratory experiments on swelling due to crystal growth in sulphate argillaceous rocks
A. Deu, E.E. Romero & I.R. Berdugo

Shear and tension behavior

Solute suction and shear strength in saturated soils
V.Y. Katte & G.E. Blight

Effect of pre-shearing/suction histories on residual shear strength of unsaturated soils
L.R. Hoyos, C.L. Velosa & A.J. Puppala

Review of factors affecting formation of cracks in clay layers
C. Lozada

Evaluating the impact of thermal variations on the penetration test parameters
G. Franchomme, S. Rosin-Paumier & F. Masrouri

Using fracture mechanics theory to evaluate the unconfined compressive strength of unsaturated fissured clays
L.E. Vallejo

Fractal evaluation of the fragmentation of clays due to desiccation
L.E. Vallejo

Critical combination of tensile and shear stresses causing the crack propagation path in brittle clays subjected to uniaxial compression
L.F. Vesga & L.E. Vallejo

Crack propagation and threshold strength of fissured clays subjected to cyclic loading
L.F. Vesga & L.E. Vallejo

Constitutive modelling and microstructure

Hydro-mechanical formulation considering fluid compressibility
S.R.C. Brant-P-de-Jesus, M.P. Cordão-Neto & I. Fernandes-Gomes

Volumetric behavior of unsaturated-reconstituted soils
G.J. Burton, D. Sheng & E. Romero

Micromechanical study of the compressibility of unsaturated granular materials
R. Barata & R. Cardoso

Progressive emergence of double porosity in a silt during compaction
F. Casini, J. Vaunat, E. Romero & A. Desideri

State surface of wetting-drying cycles at the equilibrium stage
E. Jahangir, F. Masrouri & H. Nowamooz

Assessment of the critical state strength of unsaturated aggregated soils
E.J. Murray, R.M. Jones & V. Sivakumar

Incorporating a microstructural state variable in constitutive modeling
N.M. Pinyol, E.E. Alonso & A. Gens

Effect of loading and suction history on time dependent deformation of coarse crushed slate
E. Romero, C. Alvarado & E.E. Alonso

DEM modeling of unsaturated rockfill. Scale effects
M. Tapias, E.E. Alonso & J.A. Gili

Incorporation of the soil-water characteristic curve hysteresis in pavement design
D.C. Rosenbalm & C.E. Zapata

Results of unsaturated tests on metastable soils
J.C. Ruge, R.P. da Cunha & D. Mašín

Numerical analysis of unsaturated soil behaviour under large deformations
B.C.F.L. Lopes & M.P. Cordão-Neto

Numerical modelling

Study of the influence of climatic effects on the soil temperature and suction changes
K.V. Bicalho, G.P.W. Vivacqua & Y.J. Cui

Numerical analysis of effect of rainfall infiltration on unsaturated soil
E.F. Garcia, C.A. Riveros & J.C. Saldarriaga

The impact of moisture diffusion on the structural degradation of asphalt mixtures
S. Caro

Shafts by the Sequential Excavation Method: Mechanical vs Hydro-mechanical calculations
C.C. Dias, A.T. Gomes & J. Vaunat

A lattice model for liquid transport in unsaturated porous materials
C. Fahy, P. Grassl & D. Gallipoli

Numerical simulation of a shallow foundation on an unsaturated silt
N.A. González & A. Gens

Cyclic macroelement for shallow footing over unsaturated soil
B. Kafle & F. Wuttke

BEST method: Characterization of soil unsaturated hydraulic properties
L. Lassabatere, R. Angulo-Jaramillo, T. Winiarski & D. Yilmaz

Unsaturated flow of unfrozen water in frozen soils
A. Shastri, M. Sanchez & A. Lizcano

Probabilistic analyses of slope stability under infiltration conditions
I.F. Otálvaro & M.P. Cordão-Neto

Modeling gas hydrate bearing sediments using a coupled approach
M. Sanchez, A. Shastri & J.C. Santamarina

Effect of soil replacement option on surface deflections for expansive clay profiles
A. Bharadwaj, S.L. Houston, W.N. Houston, B. Welfert & K.D. Walsh

Geotechnical problems and soil atmosphere interaction

Capillary barrier dissipation by new wicking geotextile
M. Azevedo & J.G. Zornberg

Suction stress influence on strength parameters used in geotechnical engineering
R. Baltodano-Goulding

Quantification and modeling of water flow in sandy soils in Northeast Thailand
S. Seltacho, V. Sriboonlue, N. Suwanang, W. Wiriyakitnateekul & C. Hammecker

A rainfall threshold for the occurrence of landslides in manmade slopes in residual soils in the northwest of Colombia
C.H. Hidalgo & A.P. de Assis

Use of artificial intelligence in Soil compaction modeling
E.L.P. González

Author index

Biography

Bernardo Caicedo, Carol Murillo, Laureano Hoyos, Julio Esteban Colmenares, Ivan Rafael Berdugo