All Outputs (68)

Some Notes on Granular Mixtures with Finite, Discrete Fractal Distribution (2021)
Journal Article
Imre, E., Talata, I., Barreto, D., Datcheva, M., Baille, W., Georgiev, I., Fityus, S., Singh, V. P., Casini, F., Guida, G., Trang, P. Q., & Lőrincz, J. (2022). Some Notes on Granular Mixtures with Finite, Discrete Fractal Distribution. Periodica Polytechnica Civil Engineering, 66(1), 179-192. https://doi.org/10.3311/ppci.19103

Why fractal distribution is so frequent? It is true that fractal dimension is always less than 3? Why fractal dimension of 2.5 to 2.9 seems to be steady-state or stable? Why the fractal distributions are the limit distributions of the degradation pat... Read More about Some Notes on Granular Mixtures with Finite, Discrete Fractal Distribution.

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.

Housing Construction On Peatland: Phase 1 Report (2021)
Report
Bernal-Sanchez, J., McDougall, J., Medero, G., Cook, D., & Barreto, D. (2021). Housing Construction On Peatland: Phase 1 Report. Edinburgh: Construction Scotland Innovation Centre

The economic development and social resilience of communities in rural Scotland is being hampered by a shortage of affordable housing. Nationally, about 23,000 new homes per year are needed, whilst in the year up to October 2018, only 18,000 were bui... Read More about Housing Construction On Peatland: Phase 1 Report.

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.

A guide to modeling the geotechnical behavior of soils using the discrete element method (2021)
Book Chapter
Barreto Gonzalez, D., & Leak, J. (2021). A guide to modeling the geotechnical behavior of soils using the discrete element method. In P. Samui, S. Kumari, V. Makarov, & P. Kurup (Eds.), Modeling in geotechnical engineering (79-100). Elsevier. https://doi.org/10.1016/B978-0-12-821205-9.00016-2

This article describes the discrete element method (DEM) for the modeling of the geotechnical behavior of soils. Emphasis is made on a description of the algorithms and capabilities of the method rather than on the implementation details and equation... Read More about A guide to modeling the geotechnical behavior of soils using the discrete element method.

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.

Reanalysis of some in situ compaction test results (2019)
Presentation / Conference Contribution
Imre, E., Lorincz, J., Trang, P., Casini, F., Guida, G., Fityus, S., Barreto, D., & Singh, V. (2019, September). Reanalysis of some in situ compaction test results. Presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE 2019), Reykjavik, Iceland

Brandl (1977) presents the grading curve results of an investigation of particle disintegration of natural sandy gravel and crushed stone bedding courses due to in situ compaction and the action of construction traffic in different civil engineering... Read More about Reanalysis of some in situ compaction test results.

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.

Preliminary study on the relationship between dry density of sands and the grading entropy parameters (2019)
Presentation / Conference Contribution
Imre, E., Lorincz, J., Trang, P., Csonka, I., Kaczvinszki-Szabó, V., Telekes, G., Goudarzy, M., Rahemi, N., Baille, W., Schanz, T., Barreto, D., Fityus, S., & Singh, V. (2019, September). Preliminary study on the relationship between dry density of sands and the grading entropy parameters. Presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering, Reykjavik, Iceland

Some earlier data were analysed, searching the relation between the minimum dry density emax and the two grading entropy parameters (mean log diameter and fraction number characteristic). The data were split into two components. The first... Read More about Preliminary study on the relationship between dry density of sands and the grading entropy parameters.

A note on seismic induced liquefaction (2019)
Presentation / Conference Contribution
Imre, E., Lőrincz, J., Trang, P., Barreto, D., Goudarzy, M., Rahemi, N., Baille, W., Schanz, T., & Singh, V. (2019, September). A note on seismic induced liquefaction. Presented at The XVII European Conference on Soil Mechanics and Geotechnical Engineering, Reykjavik, Iceland

Any particle size distribution can be characterized by two parameter pairs (derived from the statistical entropy formula of discrete distributions) more effectively than simple diameter values (i.e., d50). The first entropy parameter is a conti... Read More about A note on seismic induced liquefaction.

X-ray tomography of sand-rubber mixtures (2019)
Presentation / Conference Contribution
Fonseca, J., Riaz, A., & Barreto, D. (2019, July). X-ray tomography of sand-rubber mixtures. Presented at International Conference on Tomography of Materials and Structures Australia, Cairns, Australia

The behavior of sand-rubber mixtures is controlled by the mechanisms taking place at the grain scale. Here, we use a mixture of shredded tire and a silica sand with similar grain sizes to investigate granular behavior under one-dimensional compressio... Read More about X-ray tomography of sand-rubber mixtures.

Experimental assessment of stiffness and damping in rubber-sand mixtures at various strain levels (2019)
Presentation / Conference Contribution
Bernal-Sanchez, J., Mcdougall, J., Barreto, D., Marinelli, A., Dimitriadi, V., Anbazhagan, P., & Miranda, M. (2019, June). Experimental assessment of stiffness and damping in rubber-sand mixtures at various strain levels. Presented at 7th International Conference on Geotechnical Earthquake Engineering, Rome

The dynamic properties of shredded rubber-soil mixtures (ShRm), comprising a sub-rounded quartz sand combined with small rubber shreds at 0, 10, 20, 30% by mass, were investigated. Testing ranged from small strain, in resonant column apparatus, to la... Read More about Experimental assessment of stiffness and damping in rubber-sand mixtures at various strain levels.

The geoengineering approach to the study of rivers and reservoirs (2019)
Journal Article
Corbett, P. W., Owen, A., Hartley, A., Pla-Pueyo, S., Barreto Gonzalez, D., Hackney, C., & Kape, S. (2019). The geoengineering approach to the study of rivers and reservoirs. Geological Society Special Publications, https://doi.org/10.1144/SP488-2018-98

This volume contains contributions for two meetings held to explore the links between geoscience and engineering in rivers and reservoirs (surface and subsurface). The first meeting was held in Brazil and as a result the volume contains many contrib... Read More about The geoengineering approach to the study of rivers and reservoirs.

Particle-scale interaction in sand-rubber mixtures and their influence on energy dissipation mechanisms (2019)
Journal Article
Fonseca, J., Riaz, A., Bernal-Sanchez, J., Barreto Gonzalez, D., McDougall, J., Miranda Manzanares, M., Marinelli, A., & Dimitriadi, V. (2019). Particle-scale interaction in sand-rubber mixtures and their influence on energy dissipation mechanisms. Géotechnique Letters, 9(4), 1-6. https://doi.org/10.1680/jgele.18.00221

Sand-rubber mixture (SRm) behaviour is affected by rubber content (RC) whilst dissipation in sands is caused by inter-particle sliding. Dissipation in SRm is as, or more significant than in sands. However, the mechanisms of dissipation in SRm are not... Read More about Particle-scale interaction in sand-rubber mixtures and their influence on energy dissipation mechanisms.

Particle loss: An initial investigation into size effects and stress-dilatancy (2019)
Journal Article
McDougall, J., Kelly, D., & Barreto, D. (2019). Particle loss: An initial investigation into size effects and stress-dilatancy. Soils and Foundations, https://doi.org/10.1016/j.sandf.2019.03.002

Drained triaxial tests have been performed to explore the effect of particle loss on shearing behaviour and critical states in granular mixtures. The mixtures comprise Leighton Buzzard sand (d50 = 0.8 mm), to which was added 15% by mass of salt parti... Read More about Particle loss: An initial investigation into size effects and stress-dilatancy.

Dynamic behaviour of shredded rubber soil mixtures (2018)
Presentation / Conference Contribution
Bernal-Sanchez, J., McDougall, J., Barreto Gonzalez, D., Miranda, M., & Marinelli, A. (2018, June). Dynamic behaviour of shredded rubber soil mixtures. Presented at 16th European Conference on Earthquake Engineering, Thessaloniki

Residential buildings in high population density areas are seismically vulnerable to the action of major seismic events. The high cost and technical difficulties related to the use of advanced seismic isolations systems precludes its installation to... Read More about Dynamic behaviour of shredded rubber soil mixtures.