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Assessing the accuracy and efficiency of different order implicit and explicit integration schemes (2021)
Journal Article
Lloret-Cabot, M., & Sheng, D. (2022). Assessing the accuracy and efficiency of different order implicit and explicit integration schemes. Computers and Geotechnics, 141, Article 104531. https://doi.org/10.1016/j.compgeo.2021.104531

A first order accurate fully implicit integration scheme and four different order explicit substepping integration schemes with automatic error control are used in this paper to integrate the constitutive relations of a critical state model for satur... Read More about Assessing the accuracy and efficiency of different order implicit and explicit integration schemes.

Numerical integration of an elasto-plastic critical state model for soils under unsaturated conditions (2021)
Journal Article
Lloret-Cabot, M., Wheeler, S. J., Gens, A., & Sloan, S. W. (2021). Numerical integration of an elasto-plastic critical state model for soils under unsaturated conditions. Computers and Geotechnics, 137, Article 104299. https://doi.org/10.1016/j.compgeo.2021.104299

This paper presents the complete set of incremental equations for the numerical integration of the Glasgow Coupled Model (GCM) and a comprehensive algorithm for its numerical integration. The incremental formulation proposed is expressed in terms of... Read More about Numerical integration of an elasto-plastic critical state model for soils under unsaturated conditions.

A hysteretic hydraulic constitutive model for unsaturated soils and application to capillary barrier systems (2020)
Journal Article
Scarfone, R., Wheeler, S. J., & Lloret-Cabot, M. (2022). A hysteretic hydraulic constitutive model for unsaturated soils and application to capillary barrier systems. Geomechanics for Energy and the Environment, 30, Article 100224. https://doi.org/10.1016/j.gete.2020.100224

Unsaturated soils exhibit water retention hysteresis, with different water retention behaviour during drying and wetting paths. Water retention hysteresis has often been modelled using expressions for the main drying and main wetting water retention... Read More about A hysteretic hydraulic constitutive model for unsaturated soils and application to capillary barrier systems.

Conceptual Hydraulic Conductivity Model for Unsaturated Soils at Low Degree of Saturation and Its Application to the Study of Capillary Barrier Systems (2020)
Journal Article
Scarfone, R., Wheeler, S. J., & Lloret-Cabot, M. (2020). Conceptual Hydraulic Conductivity Model for Unsaturated Soils at Low Degree of Saturation and Its Application to the Study of Capillary Barrier Systems. Journal of Geotechnical and Geoenvironmental Engineering, 146(10), Article 04020106. https://doi.org/10.1061/%28asce%29gt.1943-5606.0002357

Accurate modeling and prediction of the variation of the hydraulic conductivity of unsaturated soils at a very low degree of saturation has important implications in various engineering problems. Physical processes underlying the hydraulic behavior o... Read More about Conceptual Hydraulic Conductivity Model for Unsaturated Soils at Low Degree of Saturation and Its Application to the Study of Capillary Barrier Systems.

A bounding surface mechanical model for unsaturated cemented soils under isotropic stresses (2020)
Journal Article
Bruno, A. W., Gallipoli, D., Rouainia, M., & Lloret-Cabot, M. (2020). A bounding surface mechanical model for unsaturated cemented soils under isotropic stresses. Computers and Geotechnics, 125, Article 103673. https://doi.org/10.1016/j.compgeo.2020.103673

This paper presents a model that describes the gradual yielding of unsaturated cemented soils subjected to isotropic loading. The model relies on the definition of a “cementation bonding function” which accounts for the progressive breakage of inter-... Read More about A bounding surface mechanical model for unsaturated cemented soils under isotropic stresses.

Reply to “Discussion of “From saturated to unsaturated conditions and vice versa” by M. Lloret-Cabot et al. (DOI 10.1007/s11440-017-0577-6)” by S. Qi et al. (DOI 10.1007/s11440-017-0625-2) (2018)
Journal Article
Lloret-Cabot, M., Wheeler, S. J., Pineda, J. A., Romero, E., & Sheng, D. (2018). Reply to “Discussion of “From saturated to unsaturated conditions and vice versa” by M. Lloret-Cabot et al. (DOI 10.1007/s11440-017-0577-6)” by S. Qi et al. (DOI 10.1007/s11440-017-0625-2). Acta Geotechnica, 13(2), 493-495. https://doi.org/10.1007/s11440-017-0626-1

From saturated to unsaturated conditions and vice versa (2017)
Journal Article
Lloret-Cabot, M., Wheeler, S. J., Pineda, J. A., Romero, E., & Sheng, D. (2018). From saturated to unsaturated conditions and vice versa. Acta Geotechnica, 13(1), 15-37. https://doi.org/10.1007/s11440-017-0577-6

Representing transitions between saturated and unsaturated conditions, during drying, wetting and loading paths, is a necessary step for a consistent unification between saturated and unsaturated soil mechanics. Transitions from saturated to unsatura... Read More about From saturated to unsaturated conditions and vice versa.

A unified mechanical and retention model for saturated and unsaturated soil behaviour (2016)
Journal Article
Lloret-Cabot, M., Wheeler, S. J., & Sánchez, M. (2017). A unified mechanical and retention model for saturated and unsaturated soil behaviour. Acta Geotechnica, 12(1), 1-21. https://doi.org/10.1007/s11440-016-0497-x

The coupled mechanical and water retention elasto-plastic constitutive model of Wheeler, Sharma and Buisson (the Glasgow coupled model, GCM) predicts unique unsaturated isotropic normal compression and unsaturated critical state planar surfaces for s... Read More about A unified mechanical and retention model for saturated and unsaturated soil behaviour.

Error behaviour in explicit integration algorithms with automatic substepping (2016)
Journal Article
Lloret-Cabot, M., Sloan, S. W., Sheng, D., & Abbo, A. J. (2016). Error behaviour in explicit integration algorithms with automatic substepping. International Journal for Numerical Methods in Engineering, 108(9), 1030-1053. https://doi.org/10.1002/nme.5245

This paper studies the behaviour of the error incurred when numerically integrating the elasto‐plastic mechanical relationships of a constitutive model for soils using an explicit substepping formulation with automatic error control. The correct upda... Read More about Error behaviour in explicit integration algorithms with automatic substepping.

Benchmarking selection of parameter values for the Barcelona basic model (2015)
Journal Article
D’Onza, F., Wheeler, S., Gallipoli, D., Barrera Bucio, M., Hofmann, M., Lloret-Cabot, M., …Vassallo, R. (2015). Benchmarking selection of parameter values for the Barcelona basic model. Engineering Geology, 196, 99-118. https://doi.org/10.1016/j.enggeo.2015.06.022

Seven teams took part in a benchmarking exercise on selection of parameter values for the Barcelona Basic Model (BBM) from experimental data on an unsaturated soil. All teams were provided with experimental results from 9 tests performed on a compact... Read More about Benchmarking selection of parameter values for the Barcelona basic model.

Relative performance of two unsaturated soil models using different constitutive variables (2014)
Journal Article
Lloret-Cabot, M., Wheeler, S. J., Pineda, J. A., Sheng, D., & Gens, A. (2014). Relative performance of two unsaturated soil models using different constitutive variables. Canadian Geotechnical Journal, 51(12), 1423-1437. https://doi.org/10.1139/cgj-2013-0462

Mechanical and water retention behaviour of unsaturated soils is investigated in the context of two well established coupled constitutive models, each of which is formulated in terms of a different set of stress state variables or constitutive variab... Read More about Relative performance of two unsaturated soil models using different constitutive variables.

Unification of plastic compression in a coupled mechanical and water retention model for unsaturated soils (2014)
Journal Article
Lloret-Cabot, M., Wheeler, S. J., & Sánchez, M. (2014). Unification of plastic compression in a coupled mechanical and water retention model for unsaturated soils. Canadian Geotechnical Journal, 51(12), 1488-1493. https://doi.org/10.1139/cgj-2013-0360

In 2003, Wheeler, Sharma, and Buisson presented an elastoplastic constitutive model for unsaturated soils that represents both the mechanical behaviour and water retention behaviour, including the coupling between them. A crucial feature of the model... Read More about Unification of plastic compression in a coupled mechanical and water retention model for unsaturated soils.

On the estimation of scale of fluctuation in geostatistics (2014)
Journal Article
Lloret-Cabot, M., Fenton, G. A., & Hicks, M. A. (2014). On the estimation of scale of fluctuation in geostatistics. Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards, 8(2), 129-140. https://doi.org/10.1080/17499518.2013.871189

Describing how soil properties vary spatially is of particular importance in stochastic analyses of geotechnical problems, because spatial variability has a significant influence on local material and global geotechnical response. In particular, the... Read More about On the estimation of scale of fluctuation in geostatistics.

Formulation of a three-dimensional constitutive model for unsaturated soils incorporating mechanical-water retention couplings (2013)
Journal Article
Lloret-Cabot, M., Sánchez, M., & Wheeler, S. J. (2013). Formulation of a three-dimensional constitutive model for unsaturated soils incorporating mechanical-water retention couplings. International Journal for Numerical Methods in Engineering, 37(17), 3008-3035. https://doi.org/10.1002/nag.2176

Wheeler, Sharma and Buisson proposed an elasto‐plastic constitutive model for unsaturated soils that couples the mechanical and water retention behaviours. The model was formulated for isotropic stress states and adopts the mean Bishop's stress and m... Read More about Formulation of a three-dimensional constitutive model for unsaturated soils incorporating mechanical-water retention couplings.

Investigation of the reduction in uncertainty due to soil variability when conditioning a random field using Kriging (2012)
Journal Article
Lloret-Cabot, M., Hicks, M. A., & van den Eijnden, A. P. (2012). Investigation of the reduction in uncertainty due to soil variability when conditioning a random field using Kriging. Géotechnique Letters, 2(3), 123-127. https://doi.org/10.1680/geolett.12.00022

Spatial variability of soil properties is inherent in soil deposits, whether as a result of natural geological processes or engineering construction. It is therefore important to account for soil variability in geotechnical design in order to represe... Read More about Investigation of the reduction in uncertainty due to soil variability when conditioning a random field using Kriging.