Exploració per tema "Shotcrete"

Ara es mostren els items 1-20 de 22

    • 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
      Accés obert
      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 ...

    • Compressive strength estimation of sprayed concrete at early ages 

      Galobardes Reyes, Isaac; Domingues de Figueiredo, Antonio; Pialarissi Cavalaro, Sergio Henrique; García Vicente, Tomàs; Rueda, Angel; Pérez, Jorge (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The sprayed concrete complies a construction technique that combines the placement and the compacting of concrete in only one process. This sort of concrete, which is widely used in underground constructions, requires a ...

    • Continuous monitoring of early-age properties of sprayed mortars by in situ ultrasound measurements 

      Pellegrino, Francesco; Salvador, Renan Pícolo; Aparicio, Sofía; González Hernández, Margarita; Anaya Velayos, José Javier; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio (Elsevier, 2021-07)
      Article
      Accés obert
      The development of early age properties of sprayed concrete is a key factor that governs its mix design and safe application. The conventional methods to evaluate the evolution of mechanical strength in sprayed concrete ...

    • Correlation between the compressive strength and the modulus of elasticity of sprayed concrete 

      Galobardes Reyes, Isaac; Pialarissi Cavalaro, Sergio Henrique; Aguado de Cea, Antonio; García Vicente, Tomàs; Rueda Alba, Angel Julian (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial

    • Desarrollo de un dispositivo para la determinación de la aptitud del hormigón para el bombeo 

      Rodrigo López, Miguel (Universitat Politècnica de Catalunya, 2011-06-27)
      Tesina
      Accés obert
      Hoy en día el hormigón se constituye como un material de vital importancia para la construcción y la ingeniería civil. Dentro de sus principales características cabe destacar las propiedades que presenta en estado fresco, ...

    • Desempeño mecánico y durable de hormigones proyectados curados en ambiente natural 

      D' La Guardia Fernandes, Paulo Otávio (Universitat Politècnica de Catalunya, 2020-11-27)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor

    • 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
      Accés obert
      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 ...

    • Effect of cement composition on the reactivity of alkali-free accelerating admixtures for shotcrete 

      Salvador, Renan; Pialarissi Cavalaro, Sergio Henrique; Rueda Alba, Angel Julian; Domingues de Figueiredo, Antonio (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The evolution of mechanical strength in cement matrices is strongly dependent on cement properties and on the admixtures used. Limestone additions and accelerators, used in shotcrete, alter the hydration mechanisms of the ...

    • Evaluación de propiedades mecánicas de morteros proyectados con diferentes aditivos de fraguado 

      Evangelista Manalo, Jordan (Universitat Politècnica de Catalunya, 2020-07-20)
      Treball Final de Grau
      Accés obert
      El formigó projectat ha guanyat molt protagonisme durant els últims anys en les obres civils, sobretot en projectes constructius subterranis. Aquest protagonisme és gràcies als avenços tecnològics que el sistema de projectat ...

    • Experimental and numerical study on unreinforced brick masonry walls retrofitted with sprayed mortar under uniaxial compression 

      Huang, Dawei; Albareda Valls, Albert; Pons Valladares, Oriol (2023-01-03)
      Article
      Accés obert
      The use of shotcrete or sprayed mortar is a common construction alternative to retrofit unreinforced brick masonry (URM), and extensive research has already been carried out in this area. However, most studies have been ...

    • Fibre distribution and tensile response anisotropy in sprayed fibre reinforced concrete 

      Segura Castillo, Luis; Pialarissi Cavalaro, Sergio Henrique; Goodier, Chris; Aguado de Cea, Antonio; Austin, Simon (2018-02)
      Article
      Accés obert
      Sprayed steel fibre reinforced concrete (SSFRC) is a material that tends to present anisotropy, due to the action of the spraying process inducing preferential fibre orientation. Despite numerous applications worldwide ...

    • Hormigón proyectado: análisis de la evolución de la vía seca a la vía húmeda 

      Marín Lozano, Alberto (Universitat Politècnica de Catalunya, 2003-04)
      Tesina
      Accés obert
      En el contexto del proceso constructivo de obras de hormigón, la proyección del material sobre una superficie a alta velocidad constituye una técnica de puesta en obra interesante desde el punto de vista productivo ya que ...

    • Maturity method to predict the evolution of the properties of sprayed concrete 

      Galobardes Reyes, Isaac; Pialarissi Cavalaro, Sergio Henrique; Goodier, Chris; Austin, Simon; Rueda Alba, Angel Julian (2015-03)
      Article
      Accés obert
      The maturity method provides a simple approach for assessing the strength evolution of concrete. Although it is already used in the precast industry, no reported applications with sprayed concrete may be found in the ...

    • Modelling of fiber-reinforced concrete and application case 

      Puig Damians, Ivan; Olivella Pastallé, Sebastià; Cots Corominas, Carles (International Centre for Numerical Methods in Engineering (CIMNE), 2019)
      Text en actes de congrés
      Accés obert
      This report summarizes the first results of 2D and 3D finite element method numerical modelling analysis of fiber-reinforced concrete behaviour and a tunnel case study application. A porosity strength-dependant material ...

    • Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete 

      Salvador, Renan; Pialarissi Cavalaro, Sergio Henrique; Cincotto, Maria Alba; Domingues de Figueiredo, Antonio (2016-11)
      Article
      Accés obert
      The objective of this work is to parametrize the early age hydration behavior of accelerated cement pastes based on the chemical properties of cement and accelerators. Eight cements, three alkali-free and one alkaline ...

    • Relation between ultrasound measurements and phase evolution in accelerated cementitious matrices 

      Pícolo Salvador, Renan; Pialarissi Cavalaro, Sergio Henrique; Segura Pérez, Ignacio; Hernández, Margarita G.; Ranz, Javier; Figueiredo, Antonio (2017-01)
      Article
      Accés obert
      This paper focuses on the characterization of setting and hardening of accelerated cementitious matrices by ultrasound propagation velocity, correlating these processes with chemical parameters and the phase evolution ...

    • Shear behaviour of sprayed concrete 

      García Vicente, Tomàs; Blanco Álvarez, Ana; Pialarissi Cavalaro, Sergio Henrique (2016-10)
      Article
      Accés obert
      Shear in sprayed concrete (SC) may govern the design criteria in certain applications subjected to seismic loads or in bolted areas. However, it has been scarcely studied given the complexity of reproducing the production ...

    • Sprayed cementitious mortars to strengthen urban buildings: Case study in Barcelona, Spain 

      Pons Valladares, Oriol; Huang, Dawei; Albareda Valls, Albert; Pellegrino, Francesco; Segura Pérez, Ignacio; Garcia, Tomàs; Zamora i Mestre, Joan-Lluís; Fuente Antequera, Albert de la (2020)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Cities the world over require more resilient architecture that satisfies stricter structural safety standards than in the past. However, there are too many urban building structures about to reach the end of their designed ...

    • Transport of moisture and chlorides into sprayed concrete 

      Aponte Hernández, Diego Fernando; Barra Bizinotto, Marilda; Valls del Barrio, Susanna; Fernández Carrasco, Lucía (2020)
      Text en actes de congrés
      Accés obert
      This contribution is a study of the durability and transport properties of sprayed concrete used in an actual construction site. It considers whether concrete spraying can generate different porosities as the thickness of ...

    • Use of Barcelona test for controlling fiber reinforced shotcrete in tunnelling 

      Carmona Malatesta, Sergio Alejandro; Molins i Borrell, Climent (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      During last years, many tunnelling projects which are carried out in Chile use the EFNARC panel test for the quality control of sprayed concrete. However, this test needs large and heavy specimens, which are filled when ...