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3 Results Found

  • Article
  • Open Access
37 Citations
6,307 Views
16 Pages
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Effect of Gypsum on the Early Hydration of Cubic and Na-Doped Orthorhombic Tricalcium Aluminate

  • Ana Paula Kirchheim,
  • Erich D. Rodríguez,
  • Rupert J. Myers,
  • Luciano A. Gobbo,
  • Paulo J. M. Monteiro,
  • Denise C. C. Dal Molin,
  • Rui B. De Souza and
  • Maria Alba Cincotto
Materials2018, 11(4), 568;https://doi.org/10.3390/ma11040568

7 April 2018

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 the effect of gypsum on the e...

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  • Article
  • Open Access
2,709 Views
15 Pages
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Formation, Stability, and Crystallinity of Various Tricalcium Aluminate Polymorphs

  • Simona Ravaszová,
  • Karel Dvořák,
  • Martin Boháč,
  • Dalibor Všianský and
  • Andrea Jančíková
Materials2024, 17(3), 735;https://doi.org/10.3390/ma17030735

3 February 2024

Tricalcium aluminate is an important phase of Portland clinker. In this paper, three polymorphs of C3A were prepared by means of the solid-state synthesis method using intensive milling of the raw material mixture which was doped with various amounts...

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  • Article
  • Open Access
11 Citations
7,275 Views
20 Pages
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A Scanning Transmission X-ray Microscopy Study of Cubic and Orthorhombic C3A and Their Hydration Products in the Presence of Gypsum

  • Vanessa Rheinheimer,
  • Sejung Rosie Chae,
  • Erich D. Rodríguez,
  • Guoqing Geng,
  • Ana Paula Kirchheim and
  • Paulo J. M. Monteiro
Materials2016, 9(9), 745;https://doi.org/10.3390/ma9090745

31 August 2016

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 in traditional Portland cemen...

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