Exploració per tema "Cement paste"

Ara es mostren els items 1-5 de 5

    • A review of sample preparation and its influence on pH determination in concrete samples 

      Manso Blanco, Sandra; Aguado de Cea, Antonio (Instituto Técnico de la Construcción y del Cemento, 2017-01)
      Article
      Accés obert
      If we are to monitor the chemical processes in cementitious materials, then pH assays in the pore solutions of cement pastes, mortars, and concretes are of key importance. However, there is no standard method that regulates ...

    • 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 ...

    • Estudio de morteros con árido reciclado mixto 

      Pinochet Rojas, Claudia Andrea (Universitat Politècnica de Catalunya, 2011-10-15)
      Projecte Final de Màster Oficial
      Accés obert
      Castellano: Partiendo de una revisión bibliográfica y marco teórico, en este estudio se examinan las propiedades de los morteros fabricados con árido reciclado mixto. El estudio se realiza a través de la caracterización ...

    • Influence of spraying on the early hydration of accelerated cement pastes 

      Salvador, Renan; Pialarissi Cavalaro, Sergio Henrique; Cano, Miguel; Domingues de Figueiredo, Antonio (2016-10)
      Article
      Accés obert
      In practice, most of the studies about the interaction between cement and accelerators is performed with hand-mixed pastes. However, in many applications mixing occurs through spraying, which may affect accelerators ...

    • 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 ...