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All Outputs (68)

Establishing a Relationship between Particle size distribution & Thaw weakening Susceptibility in Soils (2025)
Journal Article
Leak, J., Dimitriadi, V., Barreto, D., Bernal-Sanchez, J., & Imre, E. (2025). Establishing a Relationship between Particle size distribution & Thaw weakening Susceptibility in Soils. Cold Regions Science and Technology, 231, Article 104423. https://doi.org/10.1016/j.coldregions.2025.104423

Susceptibility to frost action in soils is an important consideration in cold and seasonably cold regions. Whilst the particle size distribution (PSD) is commonly used to measure susceptibility to frost action, this method is typically seen as unreli... Read More about Establishing a Relationship between Particle size distribution & Thaw weakening Susceptibility in Soils.

Discrete Element Study of Particle Size Distribution Shape Governing Critical State Behavior of Granular Material (2025)
Journal Article
Jiang, M., Barreto, D., Ding, Z., & Yang, K. (2025). Discrete Element Study of Particle Size Distribution Shape Governing Critical State Behavior of Granular Material. Fractal and Fractional, 9(1), Article 26. https://doi.org/10.3390/fractalfract9010026

Granular soil is a porous medium composed of particles with different sizes and self-similar structures, exhibiting fractal characteristics. It is well established that variations in these fractal properties, such as particle size distribution (PSD),... Read More about Discrete Element Study of Particle Size Distribution Shape Governing Critical State Behavior of Granular Material.

Grading curve relations for saturated hydraulic conductivity of granular materials (2024)
Journal Article
Imre, E., Illés, Z., Casini, F., Guida, G., Feng, S., Datcheva, M., Baille, W., Bálint, Á., Mwinken, D. K., Lorincz, J., Leak, J., & Barreto, D. (online). Grading curve relations for saturated hydraulic conductivity of granular materials. Environmental Geotechnics, https://doi.org/10.1680/jenge.23.00131

Estimation of hydraulic conductivity in soils is challenging. The primary aim of this study is to demonstrate that such predictions may be improved if grading curves are appropriately quantified and described, as well as by including density-related... Read More about Grading curve relations for saturated hydraulic conductivity of granular materials.

Particle size distribution induced fabric effects on the onset and post liquefaction behaviours of soils (2024)
Presentation / Conference Contribution
Leak, J., & Barreto, D. (2024, August). Particle size distribution induced fabric effects on the onset and post liquefaction behaviours of soils. Presented at XVIII European Conference on Soil Mechanics and Geotechnical Engineering, Lisbon, Portugal

Liquefaction in soils is a detrimental phenomenon. Microscale behaviours and their influence on the macroscale response during and after the onset of liquefaction are not well understood. In particular, how contact behaviours effect macroscale proper... Read More about Particle size distribution induced fabric effects on the onset and post liquefaction behaviours of soils.

Using grain size distribution to estimate permeability (2024)
Presentation / Conference Contribution
Imre, E., Bálint, Á., Houng, D. T. Q., López, L. L., Répássy, L., Mwinken, D. K., Illés, Z., Datcheva, M., Baille, W., Barreto, D., Leak, J., & Feng, S. (2024, August). Using grain size distribution to estimate permeability. Presented at XVIII European Conference on Soil Mechanics and Geotechnical Engineering, Lisbon, Portugal

This study examines the saturated water permeability using samples of loose and dense 2-fraction coarse sand mixtures. Besides the non-normalised entropy variables some additional parameters like density, diameter descriptors are used to characterize... Read More about Using grain size distribution to estimate permeability.

A Grading Entropy Review of PSD-Based Frost Susceptibility Criteria (2024)
Presentation / Conference Contribution
Leak, J., Barreto, D., Wright, C., Bernal Sanchez, J., & Imre, E. (2024, February). A Grading Entropy Review of PSD-Based Frost Susceptibility Criteria. Presented at Geo-Congress 2024, Vancouver, British Columbia

Particle size distribution (PSD) is recognised among geotechnical engineers as an informative soil descriptor, and often used to predict geomechanical behaviours. However, the effectiveness of PSD to characterise frost action is debatable. Existing c... Read More about A Grading Entropy Review of PSD-Based Frost Susceptibility Criteria.

Exploring the Use of Rock Flour for Sustainable Peat Stabilisation (2024)
Presentation / Conference Contribution
Bernal-Sanchez, J., Coll, J., Leak, J., & Barreto, D. (2024, February). Exploring the Use of Rock Flour for Sustainable Peat Stabilisation. Presented at Geo-Congress 2024, Vancouver, British Columbia, Canada

This paper aims to investigate the mechanical behaviour of peat stabilised with glacial rock flour for foundation construction. Peat, a natural organic soil, presents challenges for construction due to its high compressibility and low bearing capacit... Read More about Exploring the Use of Rock Flour for Sustainable Peat Stabilisation.

Model Fitting for Determining the Parameter of the Pore Size Distribution (2023)
Presentation / Conference Contribution
Imre, E., Mwinken, D. K., & Barreto, D. (2023, November). Model Fitting for Determining the Parameter of the Pore Size Distribution. Presented at 9th International Scientific Conference on Advances in Mechanical Engineering (ISCAME 2023), Debrecen, Hungary

The computation of the SWCC requires prior estimation of the pore-size distribution (POSD) which is computed from the PSD. The process described in detail by [1-3]. It needs a value of a which is a model parameter related to particle shape and orient... Read More about Model Fitting for Determining the Parameter of the Pore Size Distribution.

Minimum dry density in terms of grading entropy coordinates (2023)
Presentation / Conference Contribution
Imre, E., Barreto, D., Datcheva, M., Singh, V. P., Baillie, W., Feng, S., & Firgi, T. (2023, August). Minimum dry density in terms of grading entropy coordinates. Presented at 17arc - 17th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering 2023, Astana, Kazakhstan

In this paper, the grading entropy method is applied together with advanced interpolation methods in order to establish empirical relationships between grading entropy coordinates and minimum dry density of sands. Three databases consisting of 94 sam... Read More about Minimum dry density in terms of grading entropy coordinates.

The use of grading entropy in assessing granular soil hydraulic conductivity (2023)
Presentation / Conference Contribution
Feng, S., Vardanega, P., Ibraim, E., Barreto, D., & Imre, E. (2023, August). The use of grading entropy in assessing granular soil hydraulic conductivity. Presented at 17arc - 17th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering 2023, Astana, Kazakhstan

Hydraulic conductivity is an important geotechnical engineering property as it is linked to the performance of many geo-structures. This study used a recently compiled granular soil database (CG/KSAT/7/1278) to evaluate the best fit probability densi... Read More about The use of grading entropy in assessing granular soil hydraulic conductivity.

A DEM study on the effect of inherent variability of assemblies of spherical particles (2023)
Presentation / Conference Contribution
Leak, J., & Barreto, D. (2023, June). A DEM study on the effect of inherent variability of assemblies of spherical particles. Presented at NUMGE 2023: 10th European Conference on Numerical Methods in Geotechnical Engineering, London

This study presents DEM simulations of assemblies of spheres using periodic boundaries to assess the effect of inherent sample variability. DEM specimens with different particle size distributions (PSDs) were randomly generated, and then isotropicall... Read More about A DEM study on the effect of inherent variability of assemblies of spherical particles.

Use of hydraulic radius to estimate the permeability of coarse-grained materials using a new geodatabase (2023)
Journal Article
Feng, S., Barreto, D., Imre, E., Ibraim, E., & Vardanega, P. J. (2023). Use of hydraulic radius to estimate the permeability of coarse-grained materials using a new geodatabase. Transportation Geotechnics, 41, Article 101026. https://doi.org/10.1016/j.trgeo.2023.101026

This paper reviews commonly used parameters and prediction models for assessing permeability of granular soils. Following a review of published models for prediction of soil permeability, a dimensional homogenous transformation model for a-priori est... Read More about Use of hydraulic radius to estimate the permeability of coarse-grained materials using a new geodatabase.

Soil parameters in terms of entropy coordinates (2023)
Presentation / Conference Contribution
Imre, E., Firgi, T., Baille, W., Datcheva, M., Barreto, D., Feng, S., & Singh, V. (2023, May). Soil parameters in terms of entropy coordinates. Presented at 8th International Conference on Unsaturated Soils (UNSAT 2023), Milos, Greece

In the ongoing research, an approximate, grading entropy based, advanced interpolation method is applied to establish empirical functions between the grading curves and the model parameters of sands. The space of the grain size distribution curves wi... Read More about Soil parameters in terms of entropy coordinates.

Rubber-soil mixtures: use of grading entropy theory to evaluate stiffness and liquefaction susceptibility (2023)
Journal Article
Bernal-Sanchez, J., Barreto, D., & Leak, J. (2023). Rubber-soil mixtures: use of grading entropy theory to evaluate stiffness and liquefaction susceptibility. Bulletin of Earthquake Engineering, 21, 3777–3796. https://doi.org/10.1007/s10518-023-01673-3

Rubber-soil mixtures are known to have mechanical properties that enable their use in backfills, road construction or geotechnical seismic isolation systems. The complexity of these mixtures comes from adding soft (i.e. rubber) particles that increas... Read More about Rubber-soil mixtures: use of grading entropy theory to evaluate stiffness and liquefaction susceptibility.

Quantifying Particle Breakage and Its Evolution Using Breakage Indices and Grading Entropy Coordinates (2022)
Journal Article
Leak, J., Barreto, D., Dimitriadi, V., & Imre, E. (2022). Quantifying Particle Breakage and Its Evolution Using Breakage Indices and Grading Entropy Coordinates. Geotechnics, 2(4), 1109-1126. https://doi.org/10.3390/geotechnics2040052

Particle breakage in soils is a well-recognised behaviour. Conventional methods for quantifying the breakage process rely on calculating the area between the particle size distribution (PSD) curves produced before and after crushing. A key aspect of... Read More about Quantifying Particle Breakage and Its Evolution Using Breakage Indices and Grading Entropy Coordinates.

Dynamic Behaviour of a Geotechnical Seismic Isolation System with Rubber-Sand Mixtures to Enhance Seismic Protection (2022)
Presentation / Conference Contribution
Bernal-Sanchez, J., McDougall, J., Miranda-Manzanares, M., & Barreto, D. (2022, September). Dynamic Behaviour of a Geotechnical Seismic Isolation System with Rubber-Sand Mixtures to Enhance Seismic Protection. Presented at 3rd European Conference on Earthquake Engineering & Seismology, Bucharest, Romania

A Geotechnical Seismic Isolation (GSI) system is proposed in this study based on the use of Rubber-Soil mixtures (RSm) to facilitate the benefits of dynamic soil-foundation structure interaction. The latter is possible due to the lower stiffness and... Read More about Dynamic Behaviour of a Geotechnical Seismic Isolation System with Rubber-Sand Mixtures to Enhance Seismic Protection.

The permeability variables of granular matter (2022)
Presentation / Conference Contribution
Imre, E., Illes, Z., Balint, A., Gonzales, H., Repassy, L., Quynh Huong, D. T., Lopez, L. L., Barreto, D., Guida, G., Datcheva, M., Baillie, W., & Singh, V. P. (2022, May). The permeability variables of granular matter. Presented at VIth International Symposium-2022 “Biosphere & Environmental Safety”, Obuda University, Hungary

No “unique” relation between soil parameters and grading curves of granular matter can be elaborated. In case some statistics are used (e.g., d10), then infinite many grading curves may be related to the same value of it. Moreover, several densities... Read More about The permeability variables of granular matter.

Recent Advances in Nature-Inspired Solutions for Ground Engineering (NiSE) (2021)
Journal Article
Assadi-Langroudi, A., O’Kelly, B. C., Barreto, D., Cotecchia, F., Dicks, H., Ekinci, A., Garcia, F. E., Harbottle, M., Tagarelli, V., Jefferson, I., Maghoul, P., Masoero, E., El Mountassir, G., Muhunthan, B., Geng, X., Ghadr, S., Mirzababaei, M., Mitrani, H., & van Paassen, L. (2022). Recent Advances in Nature-Inspired Solutions for Ground Engineering (NiSE). International Journal of Geosynthetics and Ground Engineering, 8(1), Article 3. https://doi.org/10.1007/s40891-021-00349-9

The ground is a natural grand system; it is composed of myriad constituents that aggregate to form several geologic and biogenic systems. These systems operate independently and interplay harmoniously via important networked structures over multiple... Read More about Recent Advances in Nature-Inspired Solutions for Ground Engineering (NiSE).

A DEM Study On The Effect Of Inherent Variability In Assemblies Of Spherical Particles (2021)
Presentation / Conference Contribution
Leak, J., Barreto, D., & Dimitriadi, V. (2021, December). A DEM Study On The Effect Of Inherent Variability In Assemblies Of Spherical Particles. Paper presented at 18th Annual Geomechanics From Micro to Macro Conference, Dundee

These slides were presented at the 18th annual geomechanics from micro to macro conference in 2021 at the university of Dundee. They detail a study on the effect of inherent variability on soil parameters (such as initial void ratio, peak stress etc.... Read More about A DEM Study On The Effect Of Inherent Variability In Assemblies Of Spherical Particles.