Ara es mostren els items 19-38 de 59

    • Design-oriented approach to determine FRC constitutive law parameters considering the size effect 

      Galeote Moreno, Eduardo; Blanco Álvarez, Ana; Fuente Antequera, Albert de la (2020-05)
      Article
      Accés obert
      Tensile strength constitutive laws for fibre reinforced concrete (FRC) are commonly defined through the parameters of flexural tests conducted on standard prismatic specimens. However, there are no specific criteria to ...
    • Discrete element simulation of the fresh state steel fiber reinforced self-compacting concrete 

      Najari, Alireza; Blanco Álvarez, Ana; Fuente Antequera, Albert de la; Pialarissi Cavalaro, Sergio Henrique (Springer, 2020)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The distribution and orientation of fibers in Steel Fiber Reinforcement Self-Compacting Concrete (SFRSCC) are paramount given its influence in the mechanical properties of the material/structural elements. A two-way coupled ...
    • Diseño óptimo de dovelas de hormigón reforzado con fibras para el revestimiento de túneles 

      Fuente Antequera, Albert de la; Blanco Álvarez, Ana; Pujadas Álvarez, Pablo; Aguado de Cea, Antonio (2015)
      Article
      Accés obert
      El uso del hormigón reforzado con fibras (HRF) para la fabricación de dovelas de túneles es una práctica en aumento. Sin embargo, aún existe cierta inercia al cambio respecto a la solución tradicional de hormigón armado ...
    • Dovelas de hormigón (concreto) reforzado con fibras para el soporte de túneles y pozos verticales 

      Fuente Antequera, Albert de la; Pujadas Álvarez, Pablo; Blanco Álvarez, Ana; Aguado de Cea, Antonio (Asociación Mexicana de Ingeniería de Túneles y Obras Subterráneas (AMITOS), 2018-04)
      Article
      Accés obert
      El empleo del hormigón reforzado con fibras (HRF) para dovelas de anillos de revestimiento de túneles es ya una práctica habitual a nivel nacional e internacional. En este sentido, las ventajas técnicas a las que conduce ...
    • Durabilidad del hormigón con fibras de acero 

      Blanco Álvarez, Ana (Universitat Politècnica de Catalunya, 2008-09)
      Tesina
      Accés obert
      La durabilidad es uno de los aspectos más importantes de los hormigones puesto que tiene una incidencia fundamental en la vida útil de las estructuras. Éstas deben ser capaces de resistir, además de las solicitaciones ...
    • Eco-trench: a novel trench solution based on reusing excavated material and a finishing layer of expansive concrete 

      Blanco Álvarez, Ana; Pujadas Álvarez, Pablo; Fernández Rubio, Cristina; Pialarissi Cavalaro, Sergio Henrique; Aguado de Cea, Antonio (Instituto Técnico de la Construcción y del Cemento, 2017-10)
      Article
      Accés obert
      Installing utility pipelines generates a significant amount of trench arisings, which are usually transported to landfills instead of being reused as backfill material. This practice generates CO2 emissions and wastes raw ...
    • Effects of an internal sulfate attack and an alkali-aggregate reaction in a concrete dam 

      Campos, A.; López Garello, Carlos María; Blanco Álvarez, Ana; Aguado de Cea, Antonio (2018-03)
      Article
      Accés obert
      The alkali-aggregate reaction and the internal sulfate attack are two chemical reactions that lead to expansions in concrete structures. The former is one of the main causes of expansions in concrete dams and has been ...
    • 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
      Accés obert
      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 ...
    • Experiences in Barcelona with the use of fibres in segmental linings 

      Fuente Antequera, Albert de la; Pujadas Álvarez, Pablo; Blanco Álvarez, Ana; Aguado de Cea, Antonio (2012-01)
      Article
      Accés restringit per política de l'editorial
      This paper presents the most outstanding experiences regarding the use of fibres as the main reinforcement in precast segmental linings in the metropolitan area of Barcelona. It is known that the addition of structural ...
    • Fibre distribution in macro-plastic fibre reinforced concrete slab-panels 

      Pujadas Álvarez, Pablo; Blanco Álvarez, Ana; Pialarissi Cavalaro, Sergio Henrique; Fuente Antequera, Albert de la; Aguado de Cea, Antonio (2014-08-14)
      Article
      Accés restringit per política de l'editorial
      This paper focuses on the study of the influence of flowability and wall-effects of the formwork in the orientation pattern of macro-plastic fibres. In order to identify the preferential orientation of fibres caused by the ...
    • Flat suspended slabs reinforced only with macro-synthetic fibres 

      Pujadas Álvarez, Pablo; Blanco Álvarez, Ana; Pialarissi Cavalaro, Sergio Henrique; Aguado de Cea, Antonio; Fuente Antequera, Albert de la (2016)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Despite the remarkable advances in the field of macro-synthetic fibre reinforced concrete, the successful use of plastic macro-fibres as the sole reinforcement in structural elements still requires thorough research. Several ...
    • Flexural post-cracking creep behaviour of macro-synthetic and steel fiber reinforced concrete 

      Pujadas Álvarez, Pablo; Blanco Álvarez, Ana; Pialarissi Cavalaro, Sergio Henrique; Fuente Antequera, Albert de la; Aguado de Cea, Antonio (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper the post-cracking creep behaviour of FRC beams under flexural load is evaluated in order to determine whether under certain loading conditions plastic fibres may be safely used in the long-term without ...
    • Inductive method for assessing the amount and orientation of steel fibers in concrete 

      Torrents Dolz, Josep M.; Blanco Álvarez, Ana; Pujadas Álvarez, Pablo; Aguado de Cea, Antonio; Juan Garcia, Pablo; Sánchez-Moragues, Miguel Ángel (2012-04-24)
      Article
      Accés restringit per política de l'editorial
      Steel fibers are ferromagnetic and they have the property of altering the magnetic field around them. This paper discusses a method and gives a practical example to measure, non-destructively, the amount and orientation ...
    • Influence of the type of fiber on the structural response and design of FRC slabs 

      Blanco Álvarez, Ana; Pujadas Álvarez, Pablo; Fuente Antequera, Albert de la; Pialarissi Cavalaro, Sergio Henrique; Aguado de Cea, Antonio (2016-09)
      Article
      Accés obert
      Most codes for the design of fiber reinforced concrete (FRC) structures are based on the experience achieved throughout the years with steel fibers. Recent codes include the possibility of applying the same considerations ...
    • Influencia del efecto escala en los parámetros de diseño de hormigón reforzado con fibras 

      Galeote Moreno, Eduardo; Blanco Álvarez, Ana; Fuente Antequera, Albert de la (2022)
      Text en actes de congrés
      Accés obert
      Debido a la reducción de la resistencia residual del hormigón reforzado con fibras (HRF) al incrementar el tamaño de un elemento, resulta de gran interés determinar el alcance del efecto escala para el cálculo de los ...
    • Lessons learned about the diagnosis of pathologies in concrete dams: 30 years of research and practice 

      Blanco Álvarez, Ana; Pardo Bosch, Francesc; Pialarissi Cavalaro, Sergio Henrique; Aguado de Cea, Antonio (Elsevier, 2019-02)
      Article
      Accés obert
      Studies on the diagnosis of pathologies of concrete dams are a valuable reference for professionals managing such assets. However, detailed information is rarely reported in the literature. This paper compiles the most ...
    • Luong test for the characterization of the shear post-cracking response of fiber reinforced concrete 

      Blanco Álvarez, Ana; Aire, Carlos; Pujadas Álvarez, Pablo; Pialarissi Cavalaro, Sergio Henrique (2017-09)
      Article
      Accés obert
      The behavior of concrete subjected to shear can be significantly improved by the addition of fibers, which may partially or totally substitute the traditional steel stirrups (also known as links). Design recommendations ...
    • Luong test to evaluate residual shear behavior of FRC 

      Aire Untiveros, Carlos Máximo; Blanco Álvarez, Ana; Pujadas Álvarez, Pablo; Pialarissi Cavalaro, Sergio Henrique (2016)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The behavior of concrete subjected to shear is a complex phenomenon; difficult to be evaluated experimentally. The characterization of the behavior of fiber reinforced concrete (FRC) under shear is even more complex since ...
    • Methodology for the design of controlled low-strength materials: application to the backfill of narrow trenches 

      Blanco Álvarez, Ana; Pujadas Álvarez, Pablo; Pialarissi Cavalaro, Sergio Henrique; Aguado de Cea, Antonio (2014-12)
      Article
      Accés restringit per política de l'editorial
      The design of controlled low-strength materials (CLSM) is generally based on experimental approaches without considering an efficient use of the component materials. The present study proposes a general methodology for the ...
    • Metodología para el diseño óptimo de dovelas de hormigón reforzado con fibras 

      Fuente Antequera, Albert de la; Pujadas Álvarez, Pablo; Blanco Álvarez, Ana; Aguado de Cea, Antonio (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      En este trabajo se presentan una de las experiencias más relevantes relativas al uso de fibras estructurales como refuerzo del hormigón substitución prácticamente toda la armadura pasiva tradicional en dovelas para anillos ...