An amendment of rotation speed-torque transformation equation for the Herschel-Bulkley model in wide-gap coaxial cylinders rheometer

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Yu Liu
  • Caijun Shi
  • Qiang Yuan
  • Xiaopeng An
  • Lingli Zhu
  • Kamal Henri Khayat

Detail(s)

Original languageEnglish
Article number117530
Journal / PublicationConstruction and Building Materials
Volume237
Online published22 Nov 2019
Publication statusPublished - 20 Mar 2020
Externally publishedYes

Abstract

The Herschel-Bulkley model is one of the most commonly used rheological models for Non-Newtonian fluids, and it has been applied to describe the non-linear rheological behavior of fresh concrete. However, because it is difficult to transform the measured rotating speed and torque data into fundamental rheological units for coaxial cylinder rheometers, only an approximate approach has been proposed for this model. In order to improve the accuracy of the solution, a new integral equation describing the torque-rotation speed of Herschel-Bulkley model was derived in this paper, and 40 sets of simulated data were used for the comparison between the two methods. The equation introduced in this study was further validated by the experimental data of SCC. The results indicated that the established solution yielded more accurate results than the approximate one. © 2019 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Coaxial cylinders rheometer, Herschel-Bulkley model, Rheology, Yield stress

Bibliographic Note

Publisher Copyright: © 2019 Elsevier Ltd

Citation Format(s)

An amendment of rotation speed-torque transformation equation for the Herschel-Bulkley model in wide-gap coaxial cylinders rheometer. / Liu, Yu; Shi, Caijun; Yuan, Qiang et al.
In: Construction and Building Materials, Vol. 237, 117530, 20.03.2020.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review