Now showing items 1-20 of 34

    • A system designed to monitor in-situ the curing process of sprayed concrete 

      Aparicio Secanellas, Sofía; González Hernández, Margarita; Segura Pérez, Ignacio; Morata Royes, Miquel; Anaya, José Javier (Elsevier, 2019-11)
      Article
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      In this paper a system is presented to monitor in-situ the curing process of sprayed concrete. This system consists of an instrumented trough based on wireless sensor networks for monitoring temperature/relative humidity ...
    • Absorption conformations in the intercalation process of polycarboxylate ether based superplasticizers into montmorillonite clay 

      Borralleras, Pere; Segura Pérez, Ignacio; Garcia Aranda, Miguel Angel; Aguado de Cea, Antonio (Elsevier, 2020-03)
      Article
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      The intercalation of polycarboxylate based superplasticizers (PCE) into montmorillonite clay (MNT) is arranged preferably by two types of absorption conformations: one-to-one conformation and bridging conformation. A third ...
    • 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 ...
    • Bioreceptivity evaluation of cementitious materials designed to stimulate biological growth 

      Manso Blanco, Sandra; De Muynck, Willem; Segura Pérez, Ignacio; Aguado de Cea, Antonio; Steppe, Kathy; Boon, Nico; de Belie, Nele (2014-02-09)
      Article
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      Ordinary Portland cement (OPC), the most used binder in construction, presents some disadvantages in terms of pollution (CO2 emissions) and visual impact. For this reason, green roofs and façades have gain considerable ...
    • Characterization of a fibre-reinforced self-compacting concrete with 100% of mixed recycled aggregates 

      Ortiz Lozano, José Ángel; Fuente Antequera, Albert de la; Segura Pérez, Ignacio; Aguado de Cea, Antonio; Parapinski Dos Santos, Ana Carolina; Pacheco Martínez, Jesús; Soto Martínez, Juan J. (WIT Press, 2017-11)
      Article
      Open Access
      A new cement-based material is presented in this research contribution. The material consists in a fibre-reinforced self-compacting concrete with 100% of mixed recycled aggregate. Six different mixes were produced in two ...
    • 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 ...
    • Development and experimental validation of an overlay mortar with biocide activity 

      Vaquero Martinez, José María; Cugat Martí, Víctor; Segura Pérez, Ignacio; Calvo Torras, Mari Angels; Aguado de Cea, Antonio (2016-11)
      Article
      Open Access
      Biodeterioration of concrete by microorganism colonisation may be a problem in several structures, especially in irrigation and hydroelectric canals. The main problem in such structures is the proliferation of algae and ...
    • Development of a low pH cementitious material to enlarge bioreceptivity 

      Manso Blanco, Sandra; Mestres Beà, Gemma; Ginebra Molins, Maria Pau; de Belie, Nele; Segura Pérez, Ignacio; Aguado de Cea, Antonio (2014-03-15)
      Article
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      This paper presents a laboratory investigation into the development of a low-pH cementitious material in order to enlarge bioreceptivity. Two different options were tested; reduction of Ordinary Portland Cement (OPC) pH ...
    • Development of conductive cementitious materials using recycled carbon fibres 

      Faneca Llesera, Gerard; Segura Pérez, Ignacio; Torrents Dolz, Josep M.; Aguado de Cea, Antonio (2018-09)
      Article
      Open Access
      Conductive cementitious materials have gained immense attention in recent years owing to the possibility of achieving multifunctional materials. The usual approach has been to incorporate carbonaceous nanomaterials and/or ...
    • Dovelas innovadoras de alta durabilidad reforzadas sólo con fibras no metálicas 

      Navarro, Paz; Sánchez, María; Martín, Elena; Segura Pérez, Ignacio; Cruz Romero, Janill Marie de la; Fuente Antequera, Albert de la (2019-09)
      Article
      Open Access
      Los anillos de dovelas prefabricadas de HRF son un revestimiento habitual en túneles excavados con tuneladora. DRAGADOS-gGRAVITY Engineering-UPC han querido ir un paso más allá estudiando el comportamiento de dovelas ...
    • Early age hydration of cement pastes with alkaline and alkali-free accelerators for sprayed concrete 

      Pícolo Salvador, Renan; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio; Domingues de Figueiredo, Antonio; Pérez, Jorge (2016-05)
      Article
      Open Access
      The objective of this study is to evaluate the early age hydration mechanisms of accelerated CEM I pastes. Liquid phase analysis, conductimetry, isothermal calorimetry, in situ XRD and SEM were performed on cement pastes ...
    • 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 ...
    • Evaluation of natural colonisation of cementitious materials: Effect of bioreceptivity and environmental conditions 

      Manso Blanco, Sandra; Calvo-Torrás, María Angeles; De Belie, Nele; Segura Pérez, Ignacio; Aguado de Cea, Antonio (2015-04-15)
      Article
      Open Access
      Incorporation of living organisms, such as photosynthetic organisms, on the structure envelope has become a priority in the area of architecture and construction due to aesthetical, economic and ecological advantages. ...
    • Evaluation of the antimicrobial efficacy of industrial substrata 

      Calvo, María de los Ángeles; Vaquero, José María; Girmé, Gisela; Arosemena, Esteban Leonardo; Manso Blanco, Sandra; Segura Pérez, Ignacio; Aguado de Cea, Antonio (2014-09)
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      In this chapter we provide different methodologies to assess the antimicrobial activity of various substrates for industrial application. The capacity of microorganisms to colonize or remain viable on a variety of media: ...
    • Expansions with different origins in a concrete dam with bridge over spillway 

      Blanco Álvarez, Ana; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio; Segura Castillo, Luis; Aguado de Cea, Antonio (Elsevier, 2018-02)
      Article
      Open Access
      Concrete dams with expansions from different origins are rare and scarcely documented in the literature, therefore their study gains special interest. This study presents the case of a 62-year-old concrete dam with signs ...
    • Influence of experimental procedure on d-spacing measurement by XRD of montmorillonite clay pastes containing PCE-based superplasticizer 

      Borralleras, Pere; Segura Pérez, Ignacio; Garcia Aranda, Miguel Angel; Aguado de Cea, Antonio (2019-02)
      Article
      Restricted access - publisher's policy
      This study investigates the influence of the experimental procedure on determining the d-space enlargement of montmorillonite clay (MNT) produced by the absorption of polycarboxylate (PCE) based superplasticizers. d-Spacing ...
    • Influence of the polymer structure of polycarboxylate-based superplasticizers on the intercalation behaviour in montmorillonite clays 

      Borralleras, Pere; Segura Pérez, Ignacio; Garcia Aranda, Miguel Angel; Aguado de Cea, Antonio (Elsevier, 2019-09)
      Article
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      The influence of polymeric structure of polycarboxylate-ether (PCE) based superplasticizers on the intercalation behavior in sodium montmorillonite clay (Na-MNT) is investigated by performing in-situ X-ray diffraction ...
    • 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 ...
    • Numerical assessment of external sulfate attack in concrete structures: a review 

      Ikumi Montserrat, Tai; Segura Pérez, Ignacio (2019-07)
      Article
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      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
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      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, ...