Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries

Michael Haist, Julian Link, David Nicia, Sarah Leinitz, Christian Baumert, Tabea von Bronk, Dario Cotardo, Mahmoud Eslami Pirharati, Shirin Fataei, Harald Garrecht, Christoph Gehlen, Inga Hauschildt, Irina Ivanova, Steffen Jesinghausen, Christopher Klein, Hans W. Krauss, Ludger Lohaus, Dirk Lowke, Oliver Mazanec, Sebastian PawelczykUrsula Pott, Nonkululeko W. Radebe, Joachim Jürgen Riedmiller, Hans Joachim Schmid, Wolfram Schmidt, Egor Secrieru, Dietmar Stephan, Mareike Thiedeitz, Manfred Wilhelm, Viktor Mechtcherine

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

This paper presents the results of an interlaboratory study of the rheological properties of cement paste and ultrasound gel as reference substance. The goal was to quantify the comparability and reproducibility of measurements of the Bingham parameters yield stress and plastic viscosity when measured on one specific paste composition and one particular ultrasound gel in different laboratories using different rheometers and measurement geometries. The procedures for both in preparing the cement paste and carrying out the rheological measurements on cement paste and ultrasound gel were carefully defined for all of the study’s participants. Different conversion schemes for comparing the results obtained with the different measurement setups are presented here and critically discussed. The procedure proposed in this paper ensured a reasonable comparability of the results with a coefficient of variation for the yield stress of 27% and for the plastic viscosity of 24%, despite the individual measurement series’ having been performed in different labs with different rheometers and measurement geometries.

Original languageEnglish
Article number92
JournalMaterials and Structures/Materiaux et Constructions
Volume53
Issue number4
DOIs
StatePublished - 1 Aug 2020

Keywords

  • Cement paste
  • Interlaboratory test
  • Rheology
  • Rheometry
  • Test setup
  • Testing procedure
  • Ultrasound gel

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