Programa de Doctorat en Enginyeria del Terreny: Enviaments recents
Ara mostrant els elements 41-60 de 156
Numerical modeling of cracking along non-preestablished paths
The general objective of this thesis is the numerical representation of discrete cracks and their propagation using concepts of Configurational Mechanics, in such a way that their trajectory really corresponds to an energy ...
Experimental study and numerical modelling of soil-roots hydro-mechanical interactions
The thesis is aimed at characterising the multi-scale and hydro-mechanical behaviour of lightly compacted silty sand penetrated by a turf-grass (Cynodon Dactilon). The study will allow better assessing the impact of ...
Advanced image analysis techniques for laboratory experiments on soils
The understanding of soil behavior is the foundation where the geotechnical engineering is built on. Experimentation is essential to improve this comprehension, and then to be able to translate it into models, theories, ...
Characterization of seawater intrusion and submarine groundwater discharge in al luvial coastal aquifers: field and laboratory approach
Seawater intrusion (SWI) causes not only salinization of coastal aquifers, but also a reduction submarine groundwater discharge (SGD) and nutrient fluxes to marine ecosystems. We have developed a small scale experimental ...
THM analysis of argillaceous rocks with application to nuclear waste underground storage
Argillaceous rocks (Stiff sedimentary clays) provide the geological background to many civil engineering projects. In recent years, interest in these types of material has increased, because they are being considered as ...
Análisis numérico termo-mecánico y termo-higrométrico del hormigón expuesto a altas temperaturas
Concrete is one of the most used materials in construction, and its application spans to all kinds of structures. For this reason, concrete has been the subject of intense study. In spite of that, there are still apects ...
Update urban basemap by using the LiDAR mobile mapping system : the case of Abu Dhabi municipal system
Basemaps are the main resource used in urban planning and in building and infrastructure asset management. These maps are used by citizens and by private and public stakeholders. Therefore, accurate, up-to-date geoinformation ...
Comportamiento de un suelo compactado bajo un estado generalizado de tensiones
This thesis analyzes the hydro-mechanical behavior under a generalized stress state of a compacted mixture of sand (30%) and clayey (70%) at a low density. The experimental study focuses on the analysis of shear strength ...
Mathematical formulations of water mixing for reactive transport through heterogeneous media
The study of transport of reacting solute through aquifers is relevant in many engineering fields. Reactive transport (RT) is complex because it consists of two phenomena, solute transport and chemical reactions, both of ...
Assessment of a groundwater system under global change scenarios: the case of Kwale (Kenya)
One of the main drivers of the current global change is the climate change characterized by increased number and increased length of drought periods. Another relevant driver that will imply greater pressure on natural ...
Hydro-mechanical analysis of expansive clays : constitutive and numerical modelling.
Bentonite-based materials are being currently considered in several countries as a backfill component in the multi-barrier concept for deep geological disposal of radioactive waste. The bentonite barrier fulfils several ...
Optimal irrigation scheduling combining water content sensors and remote sensing data
By 2025, the Food and Agriculture Organization of the United Nations predicts that two-thirds of the world population will experience water stress conditions. In addition, it is expected that world population will increase ...
Lagrangian modeling of reactive transport in heterogeneous porous media
Fluid flow, solute transport, and chemical reactions in porous media are highly relevant for multiple applications and in several fields of knowledge. Aquifers are a typical example of porous media, but many others exist, ...
Estudio del comportamiento del suelo en el rango de las pequeñas deformaciones y desarrollo del modelo constitutivo EPHYSS
Soil behavior in the range of small strains should be considered in the analysis of geotechnical problems when sensitive elements are affected, which is very common in urban environments. However, some of the tests that ...
A micromechanical study of the Standard Penetration Test
This thesis explores the potential of models based on the discrete element method (DEM) to study dynamic probing of granular materials, considering realistic particle-scale properties. The virtual calibration chamber ...
Upscaling mixing-limited chemical reactions from pore to continuum scale using the dispersive lamella concept
Reactive transport modeling is an important tool for the analysis of coupled physical, chemical, and biological processes in Earth systems. Observed reactive transport in heterogeneous porous media shows a different behavior ...
Imaging and discrete modelling of sand shape
The shape of particles is known to play an important role in soil behaviour, with significant effects of engineering responses. Investigating how the shape of particles can be measured and quantified is therefore considered ...
Modeling capillarity and two-phase flow in granular media: from porescale to network scale
Numerical simulations at the pore scale are a way to study the behavior of multiphase flows encountered in many natural processes and industrial applications. In this work, liquid morphology and capillary action are examined ...
Study of ice content and hydro-mechanical behaviour of frozen soils
The hydro-mechanical behaviour of soils during freezing and thawing is a coupled multi-physics process that has important practical applications. To cite but a few examples, on artificial ground freezing –to provide ...
Support tools for groundwater management in the proximity of a mine site
The natural environment in which we live, is subjected, to a greater or lesser extent, to the pressure of human activity, with water being one of the most sensitive elements. For this reason, aware of this situation, from ...
