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All Outputs (46)

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.

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.

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.

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

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.

Optical Fiber Sensor Design for Ground Slope Movement Monitoring for Railway Safety Operations (2018)
Presentation / Conference Contribution
Hook, D., Laing, W., Kerrouche, A., Barreto Gonzalez, D., & Alwis, L. S. (2018, October). Optical Fiber Sensor Design for Ground Slope Movement Monitoring for Railway Safety Operations. Presented at 17th IEEE SENSORS Conference, New Delhi, India

Scour and slope instability are a major issue in keeping the railway structures safe and operational. Conventional measurement techniques do not allow real-time monitoring of slope movement and/or are time/resource consuming. Novel fiber optic techno... Read More about Optical Fiber Sensor Design for Ground Slope Movement Monitoring for Railway Safety Operations.

New method for rock qualification (2018)
Presentation / Conference Contribution
János, L., Emőke, I., Phong. Q, T., Miklós, G., László, K., István, T., …Guida, G. (2018). New method for rock qualification. In Mérnökgeológia-Kőzetmechanika 2018 (263-274)

A new method was elaborated to characterize the breakage properties of rocks. A crushing test was suggested and parallel tests were performed on sand-pairs with different parent rocks, using identical initial gradings. The data were analyse... Read More about New method for rock qualification.

The Influence of Particles’ Aspect Ratio on the Shear Behaviour of Granular Materials (2016)
Presentation / Conference Contribution
Xie, Y. H., Yang, Z. X., & Barreto, D. (2016, August). The Influence of Particles’ Aspect Ratio on the Shear Behaviour of Granular Materials. Presented at 7th International Conference on Discrete Element Methods, Dalian, China

The mechanical response of granular material depends both on the material properties (e.g. stiffness, anisotropy, permeability, etc.) and particle geometry (shape, roughness, etc.). This paper presents a study of the effect of particle shape (i.e. as... Read More about The Influence of Particles’ Aspect Ratio on the Shear Behaviour of Granular Materials.

Revisiting the particle size effects in centrifuge modelling (2016)
Presentation / Conference Contribution
Nadimi, S., Fonseca, J., Taylor, R. N., & Barreto, D. (2016, June). Revisiting the particle size effects in centrifuge modelling. Presented at The 3rd European Conference on Physical Modelling in Geotechnics, Nantes, France

Geotechnical centrifuge modelling provides an opportunity to examine novel and complex events in a well-controlled and repeatable environment. While grain interaction and contact dynamics are considered in centrifuge modelling, the soil is treated as... Read More about Revisiting the particle size effects in centrifuge modelling.

Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials. (2015)
Presentation / Conference Contribution
Barreto, D., Prada-Sarmiento, L. F., & Ramos-Cañón, A. M. (2015, November). Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials. Presented at 6th International Symposium on Deformation Characteristics of Geomaterials

There is no agreement between experimental researchers whether the point where a granular material responds with a large change of stresses, strains or excess pore water pressure given a prescribed small input of some of the same variables defines a... Read More about Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials..

An overview of research activities and achievement in Geotechnics from the Scottish Universities Geotechnics Network (SUGN) (2015)
Presentation / Conference Contribution
Leung, A., Anastasopoulos, I. X., Augarde, C. E., Barreto, D., Brennan, A. J., Brown, M. J. Z., Connolly, D., Coombs, W. M., Davies, T., Gao, Z., Ivanovic, A., Kenny, M., Knappett, J. A., Lombardi, D., McDougall, J., Medero, G., Muir Wood, D., El Mountassir, G., Osman, A. S., Pytharouli, S., …Zielinski, M. (2015, September). An overview of research activities and achievement in Geotechnics from the Scottish Universities Geotechnics Network (SUGN). Presented at 16th European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh

Design of geotechnical systems is often challenging as it requires the understanding of complex soil behaviour and its influence on field-scale performance of geo-structures. To advance the scientific knowledge and the technological development in ge... Read More about An overview of research activities and achievement in Geotechnics from the Scottish Universities Geotechnics Network (SUGN).

Effect of particle loss on soil behaviour. (2012)
Presentation / Conference Contribution
Kelly, D., McDougall, J., & Barreto, D. (2012, August). Effect of particle loss on soil behaviour. Paper presented at ICSE-6 6th International Conference on Scour and Erosion

Soil particle loss can result in strength and volume reductions which are difficult to predict. This paper investigates the influence of the removal of fractions of selected particle sizes under different confining pressures. The mass loss process... Read More about Effect of particle loss on soil behaviour..

The use of electronic voting systems to enhance deep learning. (2012)
Presentation / Conference Contribution
Barreto, D. (2012, July). The use of electronic voting systems to enhance deep learning

The present paper introduces a technology-enhanced teaching method that promotes deep learning. Four stages that correspond to four different student cohorts were used for its development and to analyse its effectiveness. The effectiveness of the m... Read More about The use of electronic voting systems to enhance deep learning..

Using DEM for the assessment of K0 in soils. (2011)
Presentation / Conference Contribution
Barreto, D. (2011). Using DEM for the assessment of K0 in soils. In Discrete Element Methods – Simulations of Discontinua: Theory and Applications - proceedings of the fifth international conference on discrete element methods (440-445)

Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials. (2011)
Presentation / Conference Contribution
Barreto, D. (2011, January). Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials. Paper presented at 5th International Conference on Geotechnical Earthquake Engineering (5-ICEGE)

This paper presents the results of 3D DEM simulations of granular materials subject to cyclic loading. While both the drained and undrained conditions are considered, the effects of depositional history and consolidation stress history on the stress-... Read More about Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials..