Impact of drying on pore structures in ettringite-rich cements

I. Galan*, H. Beltagui, M. García-Maté, F. P. Glasser, M. S. Imbabi

*Corresponding author for this work

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Drying techniques affect the properties of cement pastes to varying extents. The effect of different drying techniques on calcium sulfoaluminate-based (C$A) cements and their constituent phases is reported for a range of simulated and commercial C$A pastes which are benchmarked against an OPC paste. The recommended methodologies used to dry samples were identified from the literature and include D-drying and solvent exchange. These methods were used in conjunction with mercury intrusion porosimetry (MIP) and X-ray powder diffraction (XRPD) measurements to assess the changes in pore structure and the damage to crystalline phases, respectively. D-drying and isopropanol exchange are the most satisfactory and least damaging methods for drying C$A based pastes.

Original languageEnglish
Pages (from-to)85-94
Number of pages10
JournalCement and Concrete Research
Volume84
Early online date2 Apr 2016
DOIs
Publication statusPublished - 1 Jun 2016

Keywords

  • 3CaO·3AlO·CaSO (D)
  • Drying (A)
  • Ettringite (D)
  • Mercury porosimetry (B)
  • Pore size distribution (B)

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    Galan, I., Beltagui, H., García-Maté, M., Glasser, F. P., & Imbabi, M. S. (2016). Impact of drying on pore structures in ettringite-rich cements. Cement and Concrete Research, 84, 85-94. https://doi.org/10.1016/j.cemconres.2016.03.003