All Outputs (46)

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.

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.

Using grain size distribution to estimate permeability (2023)
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.

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.

Particle size distribution induced fabric effects on the onset and post liquefaction behaviours of soils (2023)
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.

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.

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.

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.

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.

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.

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.

Several cases of backward erosion/liquefaction piping from Hungary (2021)
Presentation / Conference Contribution
Imre, E., Koch, E., Nagy, L., Illés, Z., Hortobágyi, Z., & Barreto, . D. (2021, September). Several cases of backward erosion/liquefaction piping from Hungary. Presented at 6th International Conference on Geotechnical and Geophysical Site Characterization, Online

Examination of saturated hydraulic conductivity using grading curve functions (2021)
Presentation / Conference Contribution
Imre, E., Bálint, E. Á., Nagy, L., Lőrincz, J., Illés, Z., Barreto, D., Casini, F., Guida, G., & Feng, S. (2021, September). Examination of saturated hydraulic conductivity using grading curve functions. Presented at 6th International Conference on Geotechnical and Geophysical Site Characterisation, Budapest

In a previous research program 74 artificial soil mixtures of natural fluvial soils were prepared in 4 series of measurements for falling head permeability testing, differing in d 10. The conclusions drawn from the original investigations were as fol... Read More about Examination of saturated hydraulic conductivity using grading curve functions.

Revisiting Hardin’s parameters for the quantification of particle breakage – A statistical entropy approach (2021)
Presentation / Conference Contribution
Leak, J., Barreto, D., Dimitriadi, V., & Imre, E. (2021, July). Revisiting Hardin’s parameters for the quantification of particle breakage – A statistical entropy approach. Presented at Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media, Buenos Aires (Virtual), Argentina

It is well recognised that particle breakage in granular materials is affected by stress level, stress path, initial density, and particle size distribution (PSD), amongst others. Furthermore, it has been shown that breakage has a significant influen... Read More about Revisiting Hardin’s parameters for the quantification of particle breakage – A statistical entropy approach.

Quantification of Particle Breakage & its Evolution using Statistical Entropy- A Grading Entropy Approach (2020)
Presentation / Conference Contribution
Leak, J., Barreto, D., Dimitriadi, V., & Imre, E. (2020, December). Quantification of Particle Breakage & its Evolution using Statistical Entropy- A Grading Entropy Approach. Paper presented at 17th Annual Geomechanics From Micro to Macro Conference, Online

These slides were presented at the 17th annual geomechanics from micro to macro conference in 2020. They detail the comparison of the well known, and commonly used, relative breakage parameter used to assess the degree of particle breakage in soils.... Read More about Quantification of Particle Breakage & its Evolution using Statistical Entropy- A Grading Entropy Approach.

The Saturated Hydraulic Conductivity Of 2-Fraction Granular Soils And The Internal Stability (2020)
Presentation / Conference Contribution
Imre, E., Illés, Z., Bálint, Á., Barreto, D., Khaliunaa, A., Tsendsuren, B., Huong, T. Q. D., & Lizeth Guadalupe, L. L. (2020, November). The Saturated Hydraulic Conductivity Of 2-Fraction Granular Soils And The Internal Stability. Presented at 11th ICEEE – 2020 Conference, Budapest, Hungary

The four grading entropy coordinates can be used for soil classification on the basis of grain size and the grading curve shape (similarly e.g., to the diameter values). The grading entropy coordinates give information on several basic Physics featur... Read More about The Saturated Hydraulic Conductivity Of 2-Fraction Granular Soils And The Internal Stability.

Grading entropy coordinates and criteria for evaluation of liquefaction potential (2019)
Presentation / Conference Contribution
Barreto Gonzalez, D., Leak, J., Dimitriadi, V., McDougall, J., Imre, E., & Lőrincz, J. (2019, June). Grading entropy coordinates and criteria for evaluation of liquefaction potential. Presented at 7th International Conference on Earthquake Geotechnical Engineering, Rome, Italy

Several methods are commonly used for the evaluation of liquefaction potential in soils. These include criteria based on SPT and CPT tests, shear wave velocity measurements and gradation limits, amongst others. This study applies the concept of gradi... Read More about Grading entropy coordinates and criteria for evaluation of liquefaction potential.

Grading curves and internal stability (2019)
Presentation / Conference Contribution
Imre, E., Barreto, D., Talata, I., Baille, W., Rahemi, N., Goudarzy, M., Lőrincz, J., & Singh, V. (2019, August). Grading curves and internal stability. Presented at MAFIOK 2019 - Matematikát, Fizikát És Informatikát Oktatók, Dunaújváros, Hungary

The measured grading curve is an empirical distribution function, a step function. This is considered here as a discrete distribution with fixed statistical cells. In the grading entropy theory it is characterized by the... Read More about Grading curves and internal stability.

Use of Compaction Grouting as Ground Improvement Technique in Compressible Solid Waste Landfill (2019)
Presentation / Conference Contribution
Tsitsas, G., Dimitriadi, V., Barreto, D., & Ciortan, R. (2019, September). Use of Compaction Grouting as Ground Improvement Technique in Compressible Solid Waste Landfill. Presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering, Reykjavik, Iceland

Ground improvement methods are increasingly being used as means to control settlements and improve the shear strength of foundation soils. The compaction grouting (CG) method is a ground improvement method that is used as means... Read More about Use of Compaction Grouting as Ground Improvement Technique in Compressible Solid Waste Landfill.