A novel evidence for the formation of semi-permeable membrane surrounding the Portland cement particles during the induction period

Pengkun Hou, Deyu Kong*, Shiho Kawashima, Jueshi Qian, David J. Corr, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

This letter presents strong novel evidence for the semi-permeable membrane surrounding Portland cement during the induction period. In the cement hydration, heat curve obtained through high-resolution differential scanning calorimetry under isothermal conditions, one main and some other smaller endothermic peaks were detected. These endothermic peaks are believed to be caused by the osmotic expansion that occurs after the semi-permeable membrane forms, not the precipitation of calcium hydroxide or the imbibition of water during the induction period.

Original languageEnglish (US)
Pages (from-to)881-884
Number of pages4
JournalJournal of Thermal Analysis and Calorimetry
Volume113
Issue number2
DOIs
StatePublished - Aug 1 2013

Keywords

  • Cement hydration
  • Endothermic peak
  • Induction period
  • Semi-permeable membrane

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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