TY - JOUR AB - AbstractThis 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. 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 ID - 24182 JF - Materials and Structures SN - 1359-5997 TI - Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries ER - TY - JOUR 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. 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 ID - 21949 JF - Materials and Structures KW - Rheology KW - Wall Slip KW - Slip KW - apparent slip KW - suspension KW - cement KW - concrete SN - 1359-5997 TI - Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries ER -