• Álcalis incorporados ao aluminato tricálcico : efeitos na hidratação 

      Kirchheim, Ana Paula; Souza, Rui Barbosa de; Dal Molin, Denise Carpena Coitinho; Monteiro, Paulo José Melaragno (2010) [Artigo de periódico]
      O aluminato tricálcico (C3A) é a fase que reage mais rápido na hidratação do cimento quando em contato com a água. Geralmente, a forma cristalina sintetizada durante o processo de clinquerização é cúbica. No entanto, o íon ...
    • Effect of gypsum on the early hydration of cubic and Na-doped orthorhombic tricalcium aluminate 

      Kirchheim, Ana Paula; Rodriguez Martinez, Erich David; Myers, Rupert J.; Gobbo, Luciano de Andrade; Monteiro, Paulo José Melaragno; Dal Molin, Denise Carpena Coitinho; Souza, Rui Barbosa de; Cincotto, Maria Alba (2018) [Artigo de periódico]
      The tricalcium aluminate (C3A) and sulfate content in cement influence the hydration chemistry, setting time and rheology of cement paste, mortar and concrete. Here, in situ experiments are performed to better understand ...
    • A scanning transmission X-ray microscopy study of cubic and orthorhombic C3A and their hydration products in the presence of gypsum 

      Rheinheimer, Vanessa; Chae, Sejung Rosie; Geng, Guoqing; Monteiro, Paulo José Melaragno; Kirchheim, Ana Paula; Rodriguez Martinez, Erich David (2016) [Artigo de periódico]
      This paper shows the microstructural differences and phase characterization of pure phases and hydrated products of the cubic and orthorhombic (Na-doped) polymorphs of tricalcium aluminate (C3A), which are commonly found ...