Hydration of 3CaO · Al 2O 3 and 4CaO · Al 2O 3 · Fe 2O 3 in Portland cement - Hydration system of Portland cement part 2

Ippei Maruyama, Tetsuro Matsushita, Go Igarashi, Takafumi Noguchi, Yoshifumi Hosokawa, Kazuo Yamada

Research output: Contribution to journalArticlepeer-review


Hydration process of many kinds of cement paste is investigated by powder X-ray diffraction (XRD)/Rietveld analysis. The parameters of the present study are type of cement (Ordinary Portland cement, Low heat cement, and Eco-cement), water to cement ratio (0.50, 0.35), and curing temperature (283, 293, 313K). In this contribution, reaction of aluminate phase (3CaO·Al 2O 3) and ferrite phase (4CaO·Al 2O 3· Fe 2O 3) are focused and evaluated. Experimental results show that the reaction of both aluminate phase and ferrite phase are affected by the temperature and presence of calcite. When system includes calcite, monocarbonate aluminate is mainly produced, rather than ettringite. And in the case of high curing temperature, Al 2O 3 is reacted as amorphous. Regarding ferrite phase, the reaction degree at the age of 1 year decrease as curing temperature increases, this can be presumed due to dense amorphous phase around cement minerals. Based on these experimental facts, simple hydration model is proposed to evaluate development of hydration degree of aluminate phase and ferrite phase.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalJournal of Structural and Construction Engineering
Issue number659
Publication statusPublished - 2011


  • Aluminate phase
  • Calcite
  • Degree of hydration
  • Ferrite phase
  • Hydration model
  • Portland cement

ASJC Scopus subject areas

  • Architecture
  • Building and Construction


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