All Outputs (71)

Influence of rubber content and particle morphology on the dynamic behaviour, liquefaction susceptibility and internal stability of Shredded Rubber-Sand mixtures (2025)
Journal Article
Bernal-Sanchez, J., McDougall, J., Barreto, D., Dimitriadi, V., Leak, J., & Anbazhagan, P. (2025). Influence of rubber content and particle morphology on the dynamic behaviour, liquefaction susceptibility and internal stability of Shredded Rubber-Sand mixtures. Geosynthetics International. Advance online publication. https://doi.org/10.1680/jgein.24.00157

Understanding the resilience of Rubber-Soil mixtures (RSm) under cyclic loading is crucial for their application in seismic isolation. This study presents an investigation into the dynamic behaviour, internal stability, and liquefaction resistance of... Read More about Influence of rubber content and particle morphology on the dynamic behaviour, liquefaction susceptibility and internal stability of Shredded Rubber-Sand mixtures.

Towards Scientific Machine Learning for Granular Material Simulations: Challenges and Opportunities (2025)
Journal Article
Fransen, M., Fürst, A., Tunuguntla, D., Wilke, D. N., Alkin, B., Barreto, D., Brandstetter, J., Cabrera, M. A., Fan, X., Guo, M., Kieskamp, B., Kumar, K., Morrissey, J., Nuttall, J., Ooi, J., Orozco, L., Papanicolopulos, S.-A., Qu, T., Schott, D., …Cheng, H. (2025). Towards Scientific Machine Learning for Granular Material Simulations: Challenges and Opportunities. Archives of Computational Methods in Engineering. Advance online publication. https://doi.org/10.1007/s11831-025-10322-8

Micro-scale mechanisms, such as inter-particle and particle-fluid interactions, govern the behaviour of granular systems. While particle-scale simulations provide detailed insights into these interactions, their computational cost is often prohibitiv... Read More about Towards Scientific Machine Learning for Granular Material Simulations: Challenges and Opportunities.

Geotechnical seismic isolation technology with rubber- soil trenches for earthquake resilience of existing structures (2025)
Presentation / Conference Contribution
Bernal-Sanchez, J., McDougall, J., Barreto, D., Dimitriadi, V., Tsang, H. H., Pitilakis, D., Anastasiadis, A., & Leak, J. (n.d.). Geotechnical seismic isolation technology with rubber- soil trenches for earthquake resilience of existing structures. Engineering Research Infrastructures for European Synergies: Proceedings of ERIES-IW2025. Springer.

This study investigates the feasibility of using Rubber-Soil mixtures (RSm) trenches as a Geotechnical Seismic Isolation (GSI) technology to mitigate earthquake-induced ground motions and enhance the resilience of existing structures. While previous... Read More about Geotechnical seismic isolation technology with rubber- soil trenches for earthquake resilience of existing structures.

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, 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), 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. (2024). Grading curve relations for saturated hydraulic conductivity of granular materials. Environmental Geotechnics. Advance online publication. 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.

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). Using grain size distribution to estimate permeability. Proceedings of the XVIII ECSMGE 2024 (pp. 2987-2990). Taylor and Francis. https://doi.org/10.1201/9781003431749-584

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.

Particle size distribution induced fabric effects on the onset and post liquefaction behaviours of soils (2024)
Presentation / Conference Contribution
Leak, J., & Barreto, D. (2024). Particle size distribution induced fabric effects on the onset and post liquefaction behaviours of soils. Proceedings of the XVIII ECSMGE 2024 (pp. 1194-1198). Taylor and Francis. https://doi.org/10.1201/9781003431749-584

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.

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). A Grading Entropy Review of PSD-Based Frost Susceptibility Criteria. In T. M. Evans, N. Stark, & S. Chang (Eds.), Geo-Congress 2024: Soil Improvement, Sustainability, Geoenvironmental, and Cold Regions Engineering (pp. 714-724). American Society of Civil Engineers. https://doi.org/10.1061/9780784485330.072

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). Exploring the Use of Rock Flour for Sustainable Peat Stabilisation. Geo-Congress 2024: Soil Improvement, Sustainability, Geoenvironmental, and Cold Regions Engineering (pp. 450-460). American Society of Civil Engineers. https://doi.org/10.1061/9780784485330.046

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). Model Fitting for Determining the Parameter of the Pore Size Distribution. Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (pp. 43). Trans Tech Publications.

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.

The use of grading entropy in assessing granular soil hydraulic conductivity (2023)
Presentation / Conference Contribution
Feng, S., Vardanega, P. J., Ibraim, E., Barreto, D., & Imre, E. (2023). The use of grading entropy in assessing granular soil hydraulic conductivity. In A. Zhussupbekov, A. Sarsembayeva, & V. N. Kaliakin (Eds.), Smart Geotechnics for Smart Societies: Proceedings of the 17th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (17th ARC, Astana, Kazakhstan, 14-18 August, 2023) (pp. 314-319). CRC Press. https://doi.org/10.1201/9781003299127-28

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.

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). Minimum dry density in terms of grading entropy coordinates. In A. Zhussupbekov, A. Sarsembayeva, & V. N. Kaliakin (Eds.), Smart Geotechnics for Smart Societies: Proceedings of the 17th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (17th ARC, Astana, Kazakhstan, 14-18 August, 2023) (pp. 402-406). CRC Press. https://doi.org/10.1201/9781003299127-42

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.

A DEM study on the effect of inherent variability of assemblies of spherical particles (2023)
Presentation / Conference Contribution
Leak, J., & Barreto, D. (2023). A DEM study on the effect of inherent variability of assemblies of spherical particles. Proceedings 10th NUMGE 2023: 10th European Conference on Numerical Methods in Geotechnical Engineering. https://doi.org/10.53243/NUMGE2023-388

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, 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). Soil parameters in terms of entropy coordinates. 8th International Conference on Unsaturated Soils (UNSAT 2023) (382). EDP Sciences. https://doi.org/10.1051/e3sconf/202338225003

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). Dynamic Behaviour of a Geotechnical Seismic Isolation System with Rubber-Sand Mixtures to Enhance Seismic Protection. Proceedings of the 3rd European Conference on Earthquake Engineering & Seismology (pp. 2674-2683). Publishing Conspress. https://3ecees.ro/wp-content/uploads/2022/08/Proceedings_3ECEES_2022.pdf

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). The permeability variables of granular matter. VIth International Symposium-2022 on “Biosphere & Environmental Safety” Proceedings Book (pp. 201-208). https://kti.rkk.uni-obuda.hu/download-the-final-proceedings-book-vi-international-symposium-2022-on-biosphere-environmental-safety/

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.