Now showing items 1-12 of 12

    • Alternative methodology to consider damage and expansions in external sulfate attack modeling 

      Ikumi Montserrat, Tai; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio; Aguado de Cea, Antonio (2014-09-01)
      Article
      Open Access
      A diffusion–reaction numerical model is proposed to simulate the response of concrete exposed to external sulfate attack. Diffusion properties are modified based on the strain reached and the ratio of porosity filled by ...
    • Conductive concrete made from recycled carbon fibres for self-heating and de-icing applications in urban furniture 

      Faneca Llesera, Gerard; Ikumi Montserrat, Tai; Torrents Dolz, Josep M.; Aguado de Cea, Antonio; Segura Pérez, Ignacio (Instituto Técnico de la Construcción y del Cemento, 2020-09)
      Article
      Open Access
      This paper presents a broad experimental study performed at laboratory and industrial facilities to develop conductive concrete for self-heating and de-icing applications in urban furniture. Self-heating capacity is achieved ...
    • Effects of biaxial confinement in mortars exposed to external sulfate attack 

      Ikumi Montserrat, Tai; Segura Pérez, Ignacio; Pialarissi Cavalaro, Sergio Henrique (2019-01)
      Article
      Restricted access - publisher's policy
      Research on external sulfate attack (ESA) is usually performed on small scale specimens under free expanding conditions. However, most field structures cannot expand freely due to confinement induced by the ground or other ...
    • Inlfuence [sic] of early sulfate exposure on the pore network development of mortars 

      Ikumi Montserrat, Tai; Segura Pérez, Ignacio; Pialarissi Cavalaro, Sergio Henrique (Elsevier, 2017-07)
      Article
      Open Access
      The objective of this paper is to evaluate the influence of sulfate exposure on the pore network development of several Portland cement matrices. MIP, XRD and SEM analysis were performed at different ages in samples exposed ...
    • New insights on the fundamentals and modeling of the external sulfate attack in concrete structures 

      Ikumi Montserrat, Tai (Universitat Politècnica de Catalunya, 2017-10-30)
      Doctoral thesis
      Open Access
      The external sulfate attack (ESA) is a complex degradation process typically compromising the durability of underground foundations, nuclear or industrial waste containments and tunnel linings exposed to sulfate solutions. ...
    • Numerical assessment of external sulfate attack in concrete structures: a review 

      Ikumi Montserrat, Tai; Segura Pérez, Ignacio (2019-07)
      Article
      Restricted access - publisher's policy
      The slow progress of the external sulfate attack and the large size and criticality of typical structures affected by this phenomenon establish numerical modeling as a key tool to assess the future evolution of concrete ...
    • Performance of blended cements with limestone filler and illitic calcined clay immediately exposed to sulfate environment 

      Rosetti, Agustín; Ikumi Montserrat, Tai; Segura Pérez, Ignacio; Irassar, Egardo Fabián (International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), 2020)
      Part of book or chapter of book
      Restricted access - publisher's policy
      The use of ternary blended cements with limestone filler and calcined clays can improve the durability of concrete structures exposed to aggressive environments and extend their service life. In sulfate-rich environments, ...
    • Simplified analytical assessment of damage induced by the external sulphate attack in concrete piles 

      Ikumi Montserrat, Tai; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio; Goodier, Chris; Austin, Simon (Springer, 2017)
      Conference lecture
      Restricted access - publisher's policy
      Underground structures and foundations, including piles, constructed with reinforced concrete may be in contact with sulphate-rich soils and water. Structural elements exposed to these conditions may be affected by an ...
    • Simplified methodology to evaluate the external sulfate attack in concrete structures 

      Ikumi Montserrat, Tai; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio; Fuente Antequera, Albert de la; Aguado de Cea, Antonio (2016-01)
      Article
      Open Access
      The external sulfate attack is a degradation process that causes expansion and cracking in concrete structures. Due to the absence of simplified methodologies to predict the potential damage, codes specify that sulfate ...
    • Simplified model to assess the durability of elements subjected to external sulphate attack: influence of shape and size of the elements 

      Ikumi Montserrat, Tai; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio; Fuente Antequera, Albert de la; Aguado de Cea, Antonio (2016)
      Conference report
      Restricted access - publisher's policy
      The mitigation of the external sulfate attack from the standpoint of the design of concrete structures is usually based on the use of cement with limited content of aluminates. Nevertheless, other parameters may affect the ...
    • Synergistic effect of fatigue loading and accelerated corrosion on reinforced concrete beams 

      Ikumi Montserrat, Tai (Universitat Politècnica de Catalunya / Wuhan University, 2011)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      Some structures such as bridges and marine structures that are susceptible to corrosion are also subjected to repeated loading. Whenever corrosion damage can occur to the material surface of a dynamically loaded structure, ...
    • The role of porosity in external sulphate attack 

      Ikumi Montserrat, Tai; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio (2019-03)
      Article
      Restricted access - publisher's policy
      Design codes promote a limitation of permeability (indirectly of porosity) to reduce the sulphate ingress and improve the resistance of concrete and mortar to external sulphate attack (ESA). However, porosity could also ...