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Ara es mostren els items 26-45 de 48

    • Meso-mechanical analysis of the fracture of concrete specimens in mixed mode 

      Rodríguez, Mariana; López Garello, Carlos María; Carol, Ignacio; Caner, Ferhun Cem (2009)
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      Accés restringit per decisió de l'autor
      This paper describes recent numerical simulation results of some experiments carried out by Nooru-Mohamed to study mixed mode fracture of concrete. The numerical simulation is based on a meso-mechanical model developed ...

    • Mesomechanical analysis of concrete under loading that generates rotation of cracking 

      Puiggrós, L.; López Garello, Carlos María; Rodríguez, Mariana; Carol, Ignacio (CIMNE, 2015)
      Comunicació de congrés
      Accés obert
      Willam´s test has been often used to compare constitutive models which take into account induced anisotropy due to damage and cracking. This numerical test emulates the continuous rotation of the principal stress and ...

    • Micromechanical analysis of damage and fracture in sandstone rock specimens, using zero-thickness interface elements 

      Garolera Vinent, Daniel; Carol, Ignacio; López Garello, Carlos María (CIMNE, 2011)
      Text en actes de congrés
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      This numerical study deals with the analysis of rock specimens from a micromechanical point of view. The analysis is based on the Finite Element Method (FEM) with fracture-based zero-thickness interface elements, and ...

    • Model for alkali-silica reaction expansions in concrete using zero-thickness chemo-mechanical interface elements 

      Liaudat, Joaquín; Carol, Ignacio; López Garello, Carlos María (2020-12)
      Article
      Accés obert
      Alkali-Silica Reaction (ASR) is a particular type of chemical reaction in concrete, which produces cracking and overall expansion of the affected structural element due to the formation of expansive reaction products within ...

    • Modeling concrete expansions via couped C-M mesoscale analysis with zero-thickness interface elements, and lab experiments 

      Carol, Ignacio; Liaudat, Joaquín; López Garello, Carlos María (ISTE-Wiley, 2017)
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      This paper briefly summarizes ongoing developments on C-M coupled modelling of concrete swelling due to external sulfate attack and due to alkali-silica reaction. Both models are based on a meso-mechanical model for concrete, ...

    • Modeling of drying shrinkage of concrete specimens at the meso-level 

      Idiart Castellano, Andrés Enrique; López Garello, Carlos María; Carol, Ignacio (2010)
      Article
      Accés restringit per política de l'editorial
      In this paper, an existing mesomechanical model for cementitious materials is extended to the domain of diffusion-driven phenomena. The model is based on the Finite Element Method, and uses zerothickness interface elements ...

    • Modeling of heat and mass transfer induced by high temperature in concrete 

      Rodríguez, Mariana; López Garello, Carlos María; Carol, Ignacio (CIMNE, 2015)
      Text en actes de congrés
      Accés obert
      In the context of a long term development of a general meso-mechanical model for concrete under mechanical and environmental actions, this paper describes the on-going work to represent theheat and moisture transfer in ...

    • Modelling acid attack of oil-well cement exposed to carbonated brine: effect of specimen geometry on experimental results 

      Barandiarán Villegas, Lucía Belén; Liaudat, Joaquín; López Garello, Carlos María; Carol, Ignacio (CIMNE, 2019)
      Text en actes de congrés
      Accés obert
      In recent years, the authors and co-workers have developed a diffusion-reaction model for the degradation process of oil-well cements exposed to carbonated brines in the context of CO2 capture and storage in abandoned oil ...

    • Modelling acid attack of oilwell cement exposed to carbonated brine 

      Liaudat, Joaquín; Martínez Estévez, Ariadna; López Garello, Carlos María; Carol, Ignacio (John Gale, 2018-01)
      Article
      Accés obert
      A diffusion-reaction model for the carbonation process of oilwell cement exposed to carbonated brine under CO2 geological storage conditions is presented. The formulation consists of two main diffusion/reaction field ...

    • Modelling acid attack of oilwell cement exposed to carbonated brine: effect of specimen geometry on experimental results 

      Barandiarán Villegas, Lucía Belén; Liaudat, Joaquín; López Garello, Carlos María; Carol, Ignacio (2019)
      Text en actes de congrés
      Accés obert
      In recent years, the authors and co-workers have developed a diffusion-reaction model for the degradation process of oilwell cements exposed to carbonated brines in the context of CO2 capture and storage in abandoned oil ...

    • Modelling of heat and moisture transfer in concrete at high temperature 

      Rodríguez, Mariana; López Garello, Carlos María; Carol, Ignacio (2017)
      Text en actes de congrés
      Accés obert
      Moisture diffusion and related fluid pressures play a key role in cracking and spalling of concrete subject to high temperatures. This paper describes recent developments of a mode for moisture and heat transfer in porous ...

    • Modelling of heat and moisture transfer in concrete at high temperature 

      Rodríguez, M.; López Garello, Carlos María; Carol, Ignacio (CIMNE, 2017)
      Text en actes de congrés
      Accés obert
      Moisture diffusion and related fluid pressures play a key role in cracking and spalling of concrete subject to high temperatures. This paper describes recent developments of a mode for moisture and heat transfer in porous ...

    • New results in 3D-mesomechanical coupled analysis of external sulphate attack in concrete 

      Biscaro, Caterina; Martínez Estévez, Ariadna; Pérez Carreras, Adrià; López Garello, Carlos María; Xotta, G.; Carol, Ignacio (International Centre for Numerical Methods in Engineering (CIMNE), 2021)
      Text en actes de congrés
      Accés obert
      External Sulphate Attack (ESA) is one of the main degradation processes affecting concrete structures. It takes place when the concrete is in an environment rich in sulphate ions and with a high humidity index. Once it has ...

    • Numerical analysis of Mequinenza dam 

      Buil, J.; Río, F.; Campos, A.; López Garello, Carlos María; Aguado de Cea, Antonio (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Due to its historical and strategic significance, the Mequinenza dam has a vital importance within the Spanish hydrographic system. From its early stages in the 1960s, it is endowed with a complex and complete auscultation ...

    • Numerical and experimental study of ASR in concrete at the meso-level 

      Liaudat, Joaquín; López Garello, Carlos María; Carol, Ignacio (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, an ongoing research project on the mechanisms of concrete deterioration due to Alkali-Silica Reaction (ASR) is presented, together with some preliminary results. The research program includes both experimental ...

    • Numerical modelling of ASR expansions in concrete 

      Liaudat, Joaquín; Martínez Estévez, Ariadna; López Garello, Carlos María; Carol, Ignacio (American Society of Civil Engineers (ASCE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In the context of a project to characterize and model the Alkali-Silica Reaction in concrete, the results of a series of tests on specimens with a single interface between aggregate and cement paste, and the comparison to ...

    • Numerical modelling of two-phase flow in fractured rock masses using zero-thickness interface elements 

      Barandiarán Villegas, Lucía Belén; Liaudat, Joaquín; López Garello, Carlos María; Carol, Ignacio (International Centre for Numerical Methods in Engineering (CIMNE), 2021)
      Text en actes de congrés
      Accés obert
      In recent years, the authors and co-workers have developed a 3D finite element model for coupled thermo-hydro-mechanical (THM) problems in fractured rock masses. Zero-thickness interface elements are used for taking into ...

    • Numerical study of intervertebral prosthesis 

      Pérez, A.; Aliguer Piferrer, Ignasi; López Garello, Carlos María; Carol, Ignacio; Molina, A. (CIMNE, 2015)
      Comunicació de congrés
      Accés obert
      Lumbar interbody fusion is a lumbar surgical procedure that consists of replacing the intervertebral disk with a stiff prosthetic device (the fusion cage), with the purpose of promoting bone growth in between the two ...

    • Problemática y actuaciones recientes en la presa de Mequinenza 

      Buil Sanz, Juan Manuel; Río, F.; Campos, A.; Aguado de Cea, Antonio; López Garello, Carlos María; Chinchón, S. (2010-06-21)
      Text en actes de congrés
      Accés obert
      La presa de Mequinenza dispone, desde sus primeras etapas en los años 60, de importantes medidas de auscultación que permitieron detectar en las primeras épocas un comportamiento anómalo del bloque 13-14, diagnosticado ...

    • Recent developments in durability mesomechanics of concrete, including cracking via interface elements 

      Liaudat, Joaquín; Rodríguez, Mariana; López Garello, Carlos María; Carol, Ignacio (American Society of Civil Engineers (ASCE), 2013)
      Text en actes de congrés
      Accés obert
      The mesomechanical model for concrete previously developed for purely mechanical actions, is used as the basis for coupled durability mechanics calculations. Until now, the phenomena studied include drying shrinkage, ...