Rheometric and ultrasonic investigations of viscoelastic properties of fresh Portland cement pastes

Zhihui Sun*, Thomas Voigt, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

The paper investigates the possibility of using a shear wave reflection technique to monitor the viscoelastic behavior (represented by storage shear modulus and viscosity) of Portland cement paste at very early age. Three cement pastes with water/cement ratios equal to 0.4, 0.5 and 0.6 cured under water at a constant temperature of 25 °C were studied. By measuring the wave reflection coefficients and the phase angles of reflected ultrasonic waves, the dynamic storage shear moduli and the viscosity of the cement paste can be calculated. The calculated results of the storage modulus were compared with the results obtained directly from the oscillatory rheometric measurement. In addition, the viscosity calculated from the wave reflection measurements was compared with results obtained directly from the step rheometric method and a qualitative agreement was found. The results show that as a non-destructive method, the ultrasonic wave reflection method provides useful information about both the elastic and viscous behavior of cement pastes at very early age.

Original languageEnglish (US)
Pages (from-to)278-287
Number of pages10
JournalCement and Concrete Research
Volume36
Issue number2
DOIs
StatePublished - Feb 2006

Keywords

  • Oscillatory rheology
  • Storage modulus
  • Ultrasonic wave reflection coefficient
  • Viscoelastic behavior
  • Viscosity

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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