Effect of pressure on early hydration of class H and white cement

George Scherer, Gary P. Funkhouser, S. Peethamparan

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

The change in viscosity of cement slurry with temperature and pressure can be predicted by assuming that hydration can be treated as an activated process and that a given viscosity corresponds to a fixed degree of reaction. For Class H and White cements, chemical shrinkage experiments indicate that the activation energy is 33.8 kJ/mole and rheological measurements yield an activation volume of -30 cm3/mole. With these parameters, it is possible to predict the limit of pumpability of the slurry (which corresponds to a viscosity of about 2.5 Pa s) for arbitrary temperature and pressure cycles. This method of prediction requires that the physics of the process remain the same, but simply change in rate; therefore, the range of applicability is expected to be limited to temperatures below about 100 °C, since new phases occur at higher temperatures.

Original languageEnglish (US)
Pages (from-to)845-850
Number of pages6
JournalCement and Concrete Research
Volume40
Issue number6
DOIs
StatePublished - Jun 1 2010

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Materials Science(all)

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