TY - JOUR

T1 - Interlaboratory study on rheological properties of cement pastes and reference substances

T2 - comparability of measurements performed with different rheometers and measurement geometries

AU - Haist, Michael

AU - Link, Julian

AU - Nicia, David

AU - Leinitz, Sarah

AU - Baumert, Christian

AU - von Bronk, Tabea

AU - Cotardo, Dario

AU - Eslami Pirharati, Mahmoud

AU - Fataei, Shirin

AU - Garrecht, Harald

AU - Gehlen, Christoph

AU - Hauschildt, Inga

AU - Ivanova, Irina

AU - Jesinghausen, Steffen

AU - Klein, Christopher

AU - Krauss, Hans W.

AU - Lohaus, Ludger

AU - Lowke, Dirk

AU - Mazanec, Oliver

AU - Pawelczyk, Sebastian

AU - Pott, Ursula

AU - Radebe, Nonkululeko W.

AU - Riedmiller, Joachim Jürgen

AU - Schmid, Hans Joachim

AU - Schmidt, Wolfram

AU - Secrieru, Egor

AU - Stephan, Dietmar

AU - Thiedeitz, Mareike

AU - Wilhelm, Manfred

AU - Mechtcherine, Viktor

N1 - Funding information: The phenomena mentioned are only a few important aspects which cause erroneous measurements and misinterpretations in rheological experiments. An extended overview of the available techniques, their capabilities and limitations can be found in [, ]. This multitude of challenges has led to the development of a large number of different measurement setups in the following named geometries, some of which are employed in current interdisciplinary research within the Priority Programme SPP 2005 “O pus F luidum F uturum —Rheology of reactive, multiscale, multiphase construction materials”, funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG). Open Access funding provided by Projekt DEAL. The authors thank the Deutsche Forschungsgemeinschaft (DFG) for funding this research within the DFG Priority Programme 2005 “O pus F luidum F uturum ” under the grants 387096404 (HA 7917/3-1), 387118319 (LO 1393/3-1), 387092747 (SCHM 3365/1-1), 387065685 (GA 519/10-1), 411375374 (LO 751/26-1), 387066140 (KR 4948/1-1), 387095311 (ME 2938/19-1), 387152958 (ME 2938/20-1), 387153567 (ME 2938/21-1), 403524381 (SCHM 1429/16-1), 386871659 (WI 1911/25-1), 386869775 (STE 1086/18-1), 387065993 (GE 1973/28-1). For more details please visit https://www.spp2005.de . Furthermore, the authors thank HeidelbergCement AG for providing the cement for this research.

PY - 2020/7/14

Y1 - 2020/7/14

N2 - 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.

AB - 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.

KW - Cement paste

KW - Interlaboratory test

KW - Rheology

KW - Rheometry

KW - Test setup

KW - Testing procedure

KW - Ultrasound gel

UR - http://www.scopus.com/inward/record.url?scp=85082994313&partnerID=8YFLogxK

U2 - 10.1617/s11527-020-01477-w

DO - 10.1617/s11527-020-01477-w

M3 - Article

AN - SCOPUS:85082994313

VL - 53

JO - Materials and Structures/Materiaux et Constructions

JF - Materials and Structures/Materiaux et Constructions

SN - 1359-5997

IS - 4

M1 - 92

ER -