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Ara es mostren els items 30-49 de 152

    • Characterizing a filtered stabilized metallurgical residue with PMT 

      Arroyo Alvarez de Toledo, Marcos; Vargas, Carlos O.; Martínez, Estrella; Salgado, David E. (University of British Columbia (UBC), 2022)
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      This paper illustrates how pressuremeter testing may add value to geotechnical characterization of tailing storage facilities (TSF). This is done with reference to results obtained in a campaign on jarosa, a lime-stabilized ...

    • Cimentación directa para eólica marina 

      Arroyo Alvarez de Toledo, Marcos; Alcoverro Bassols, Jordi; Abadías, David; Gens Solé, Antonio (Sociedad Española de Mecánica del Suelo e Ingeniería Geotécnica, 2012)
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    • Clustering analysis to improve total unit weight prediction from CPTu 

      Collico, Stefano; Arroyo Alvarez de Toledo, Marcos; Devincenzi, M.J.; Rodriguez, A.; Deu Lozano, Amadeu (Taylor & Francis Group, 2022)
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      Accurate estimates of soil unit weight are fundamental for correctly post process CPTu data and making use of Soil Behavior Type-based classification systems. Soil-specific and global regressions have been proposed for ...

    • Compression and shear wave propagation in cemented sand specimens 

      Amaral, M.F.; Viana da Fonseca, A.; Arroyo Alvarez de Toledo, Marcos; Cascante, G.; Carvalho, J. (2011)
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      Accés restringit per política de l'editorial
      Ultrasonic and bender element tests in the laboratory are typically used to measure elastic modulus and damping ratio. However, interpretation of the results is challenging for a variety of reasons, including the influence ...

    • Cone penetration tests in a virtual calibration chamber 

      Arroyo Alvarez de Toledo, Marcos; Butlanska, Joanna; Gens Solé, Antonio; Calvetti, Francesco; Jamiolkowski, Michael (2011)
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      A virtual calibration chamber was built using a threedimensional model based on the discrete-element method. The chamber was then filled with a scaled granular equivalent of Ticino sand, the material properties of which ...

    • Coupled CFD–DEM method for undrained biaxial shear test of methane hydrate bearing sediments 

      Jiang, Mingjing; Shen, Zhifu; Zhou, Wei; Arroyo Alvarez de Toledo, Marcos; Zhang, Wangcheng (2018-11)
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      Accés obert
      Methane hydrate (MH), a potential source of future energy, is extensively deposited in marine sediments. It is essential to understand the mechanical properties of methane hydrate bearing sediments (MHBS) for applications ...

    • Coupled effective stress analysis of insertion problems in geotechnics with the Particle Finite Element Method 

      Monforte Vila, Lluís; Arroyo Alvarez de Toledo, Marcos; Carbonell Puigbó, Josep Maria; Gens Solé, Antonio (Elsevier, 2018-09)
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      Accés obert
      This paper describes a computational framework for the numerical analysis of quasi-static soil-structure insertion problems in water saturated media. The Particle Finite Element Method is used to solve the linear momentum ...

    • Coupled hydromechanical modelling of cone penetration in layered liquefiable soils 

      Boschi, Katia; Arroyo Alvarez de Toledo, Marcos; Monforte Vila, Lluís; Carbonell Puigbó, Josep Maria; Gens Solé, Antonio (2024-02)
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      Accés restringit per política de l'editorial
      Soil layering modifies cone penetration measurements when the cone is close to layer boundaries. Transition zone and thin-layer effects appear, complicating interpretation. To help identify the mechanisms underlying ...

    • DEM examination of SPT correction factors 

      Zhang, Ningning; Arroyo Alvarez de Toledo, Marcos; Ciantia, Matteo Oryem; Gens Solé, Antonio (2021-06)
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      Accés obert
      The Standard Penetration Test (SPT) is the most widely used method for dynamic testing of soils. The test is simple and robust but difficult to control and not fully standardized. As a result, experimental results typically ...

    • DEM modelling of a double-porosity crushable granular material 

      Ciantia, Matteo Oryem; Arroyo Alvarez de Toledo, Marcos; Butlanska, Joanna; Gens Solé, Antonio (CRC Press, 2014)
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      The effect of grain crushing during one dimensional compression and triaxial compression tests is investigated in a double-porosity granular material using the Discrete Element Method (DEM). Experimental tests results from ...

    • DEM modelling of cone penetration tests in a double-porosity crushable granular material 

      Ciantia, Matteo Oryem; Arroyo Alvarez de Toledo, Marcos; Butlanska, Joanna; Gens Solé, Antonio (2016-03)
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      Accés obert
      A three-dimensional discrete element model is used to investigate the effect of grain crushing on the tip resistance measured by cone penetration tests (CPT) in calibration chambers. To do that a discrete analogue of pumice ...

    • DEM modelling of dynamic penetration in granular material 

      Zhang, Ming; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Ciantia, Matteo Oryem (CRC Press, 2018)
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      Dynamic penetration has been widely employed in some site investigation procedures and for the installation of driven piles. A 3-dimensional discrete element method model has been developed to simulate dynamic rod penetration ...

    • DEM simulation of soil-tool interaction under extraterrestrial environmental effects 

      Jiang, Mingjing; Xi, Banglu; Arroyo Alvarez de Toledo, Marcos; Rodríguez Dono, Alfonso (2017-06)
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      Accés obert
      In contrast to terrestrial environment, the harsh lunar environment conditions include lower gravity acceleration, ultra-high vacuum and high (low) temperature in the daytime (night-time). This paper focuses on the effects ...

    • Design control and monitoring of a jet grouted excavation bottom plug 

      Eramo, N.; Modoni, Giuseppe; Arroyo Alvarez de Toledo, Marcos (CRC Press/Balkema, 2012)
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      Jet grouting is adopted in different geotechnical conditions to ensure provisional earth retaining and waterproofing functions at the bottom and walls of excavations. Despite careful theoretical models avail-able to predict ...

    • Design of jet-grouting for tunnel waterproofing 

      Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio; Croce, Paolo; Modoni, Giuseppe (CRC Press/Balkema, 2012)
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      A case history in Barcelona is described where a tunnel was excavated by traditional methods below an active railway line through a formation with lenses of water-bearing granular material. To avoid the possibility of ...

    • Discrete element models of soil-geogrid interaction 

      Irsainova, Alina; Arroyo Alvarez de Toledo, Marcos; Kim, Jong-Ryeol (Springer Nature, 2019)
      Capítol de llibre
      Accés obert
      Geogrids are the geosynthetics of choice for soil reinforcement applications. To evaluate the efficiency of geogrid reinforcement, several methods are used including field tests, laboratory tests and numerical modeling. ...

    • Discussion of “Stresses developed around displacement piles penetration in sand” by Z. X. Yang, R. J. Jardine, B. T. Zhu, and S. Rimoy 

      Butlanska, Joanna; Arroyo Alvarez de Toledo, Marcos (2015-03)
      Article
      Accés obert
      The authors deserve praise for gathering together many different strands of evidence that clarify the mechanics of pile penetration in sand. In their review of numerical approaches to the problem, they correctly indicate, ...

    • Effects of heating and hydraulic cycling on the stiffness response of a rigid ansiotropic clay: preliminary results 

      Mitaritonna, Giuseppina; Pineda, Jubert Edgar; Romero Morales, Enrique Edgar; Arroyo Alvarez de Toledo, Marcos (2009)
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      The poster presents the results of an experimental investigation aimed at evaluating the effects of heating and hydraulic cycling on the small-strain stiffness of a rigid Jurassic clay (Opalinus clay, Jura Mountains, Mont ...

    • Effects of tailings viscosity on liquefaction triggering analyses 

      Mánica Malcom, Miguel Ánge; Arroyo Alvarez de Toledo, Marcos; Gens Solé, Antonio (University of Alberta, 2021)
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      Recent analyses have suggested that creep or rate effects may be present in some tailings and can play a role in triggering liquefaction failure. However, the role of creep in liquefaction triggering analysis of tailing ...

    • Energy balance analyses during Standard Penetration Tests in a virtual calibration chamber 

      Zhang, Ningning; Arroyo Alvarez de Toledo, Marcos; Ciantia, Matteo Oryem; Gens Solé, Antonio (Elsevier, 2021-05)
      Article
      Accés obert
      The Standard Penetration Test (SPT) is the most popular example of dynamic probing, a large category of soil testing techniques. Understanding and interpretation of these tests is hampered by the difficulties of reproducing ...