Now showing items 316-335 of 353

    Study of ice content and hydro-mechanical behaviour of frozen soils 

    Mao, Yanxin (Date of defense: 2018-09-06)

    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 ...

    Study of near field processes involved in the oxidative dissolution of the spent nuclear fuel and radionuclides release 

    Espriu, Alexandra (Date of defense: 2017-07-17)

    Nowadays nuclear power plants (NPP) and dedicated facilities are storing the spent nuclear fuel (SNF). In the case of Spain, the NPP have enough space in their pools to keep storing the SNF produced from their activity; ...

    Study of the structural behavior of hybrid elements of carbon fiber reinforced polymer and concrete 

    Mahboob, Amir (Date of defense: 2021-11-30)

    Creating sustainability and public infrastructure is a fairly recent subject the engineering community has been debating. Introducing new building materials or introducing new structural designs is a strategy for constructing ...

    Study on the shear and punching-shear strength of reinforced concrete slabs subjected to point loads and in-plane tensile forces 

    Fernández Sánchez, Pablo Gonzalo (Date of defense: 2021-12-20)

    Reinforced concrete members, especially when subjected to concentrated loads, can fail in shear. This is an undesirable and brittle failure mode preventing the structure from deforming and reaching higher load levels. It ...

    Subsurface as a bioreactor : interaction between physical heterogeneity and microbial processes 

    Perujo Buxeda, Núria (Date of defense: 2018-07-12)

    Infiltration systems are water treatment technologies where water vertically percolates through porous media while several biogeochemical processes occur. Biofilms are the main responsible for those biogeochemical processes ...

    Support tools for groundwater management in the proximity of a mine site 

    Scheiber Pagès, Laura (Date of defense: 2017-06-09)

    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 ...

    Sustainability in the post-disaster temporary housing management for urban areas 

    Hosseini, Seyed Mohammad Amin (Date of defense: 2016-09-30)

    Many people lose their homes every year due to natural disasters. One of the major challenges to mollify displaced persons is the provision of adequate post-disaster accommodations, temporary housing (TH) being the most ...

    Sustainability, durability and mechanical characterization of a new recycled textile-reinforced strain-hardening cementitious composite for building applications 

    Sadrolodabaee, Payam (Date of defense: 2022-07-11)

    Cementitious materials have one of the highest compressive strength-to-weight ratios compared to other construction materials. Nonetheless, both tensile strength capacity and toughness result to be an order of magnitude ...

    Sustainable business model perspectives for the electric vehicle industry : the case of battery second use 

    Reinhardt, Robert, 1989- (Date of defense: 2019-11-08)

    The purpose of this doctoral research dissertation is to examine sustainable business model (SBM) perspectives for the rapidly developing Battery Second Use (B2U) market within the emerging electric vehicle (EV) industry. ...

    Syntrophic acetate oxidation in the anaerobic digestion of nitrogen-rich wastes : from microbial interactions to process optimization 

    Ruiz Sánchez, Josep (Date of defense: 2018-11-09)

    The anaerobic digestion (AD) consists of a cascade of syntrophic interactions between several microbial groups that result in the breakdown of biodegradable organic matter in the absence of oxygen, resulting in the production ...

    A system for crack pattern detection, characterization and diagnosis in concrete structures by means of image processing and machine learning techniques 

    Sánchez Calderón, Luis Alberto (Date of defense: 2018-01-16)

    A system that attempts to find cracks in a RGB picture of a concrete beam, measure the cracks angles and widths; and classify crack patterns in 3 pathologies has been designed and implemented in the MATLAB programming ...

    T-H-M coupling with large advection in fractured rock masses using zero-thickness interface elements 

    Pérez Carreras, Adrià (Date of defense: 2018-12-04)

    The study of hydro-mechanical (HM) coupled problems in different areas of civil, environmental or petroleum engineering is common in literature, but the effect of a thermal field by means of the heat transport by a fluid ...

    Theoretical and experimental study of the behaviour at service and failure of partially prestressed concrete beams under flexure and shear 

    Celada Blesa, Ulric (Date of defense: 2019-12-16)

    Partially Prestressed Concrete (PPC) is an intermediate design approach between reinforced and totally prestressed concrete, that enables controlled cracks in service phase. Conversely, totally prestressed concrete is ...

    Thermomechanical modelling of ground response under environmental actions. 

    Samat, Sergio (Date of defense: 2016-11-09)

    Natural disasters, such as landslides triggered by heavy rains, rock deformations and soil cracking in presence of temperature changes and other phenomena related to climatic actions, show the relevance of investigating ...

    THM analysis of argillaceous rocks with application to nuclear waste underground storage 

    Tourchi, Saeed (Date of defense: 2020-12-04)

    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 ...

    THM coupled behaviour of a deep poorly indurated argillaceous formation 

    Sau Valenzuela, Núria (Date of defense: 2021-11-19)

    (English) Deep geological disposal of heat-emitting and long-lived radioactive waste is the solution internationally accepted that offers the most viable and safest way to manage this kind of wastes. Accordingly, the ...

    Towards computational modeling of electrohydrodynamics in microfluidics-based manufacturing 

    Narváez Muñoz, Christian (Date of defense: 2023-05-05)

    (English) The high precision controllability and versatility of Electrohydrodynamic (EHD) processes are enabling and accelerating the development of novel microfluidic-based manufacturing techniques. This technology relies ...

    Tracing the dynamics of dissolved organic matter in marine systems exposed to natural and experimental perturbations 

    Aparicio Bernat, Francisco Luis (Date of defense: 2016-09-22)

    In the coming decades, global warming will affect the biogeochemical cycles evolution, particularly the carbon cycle. In this context, it is necessary to gain knowledge on the Earth natural mechanisms to relieve the ...

    Tracking localized cracks in the computational analysis of masonry structures 

    Saloustros, Savvas (Date of defense: 2017-11-29)

    Numerical methods aid significantly the engineering efforts towards the conservation of existing masonry structures and the design of new ones. Among them, macro-mechanical finite element methods based on the smeared crack ...

    The transport and environmental impacts of cruise ships : application to the case of the Port of Barcelona 

    Ros Chaos, Sergi (Date of defense: 2020-12-17)

    The rapid evolution of the cruise industry in the last 50 years is evident. In the nineteenth century, cruise ships were simple modes of transport used by immigrants to travel on transoceanic voyages from Europe to North ...