---
_id: '21949'
abstract:
- lang: eng
  text: 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.
article_type: original
author:
- first_name: Michael
  full_name: Haist, Michael
  last_name: Haist
- first_name: Julian
  full_name: Link, Julian
  last_name: Link
- first_name: David
  full_name: Nicia, David
  last_name: Nicia
- first_name: Sarah
  full_name: Leinitz, Sarah
  last_name: Leinitz
- first_name: Christian
  full_name: Baumert, Christian
  last_name: Baumert
- first_name: Tabea
  full_name: von Bronk, Tabea
  last_name: von Bronk
- first_name: Dario
  full_name: Cotardo, Dario
  last_name: Cotardo
- first_name: Mahmoud
  full_name: Eslami Pirharati, Mahmoud
  last_name: Eslami Pirharati
- first_name: Shirin
  full_name: Fataei, Shirin
  last_name: Fataei
- first_name: Harald
  full_name: Garrecht, Harald
  last_name: Garrecht
- first_name: Christoph
  full_name: Gehlen, Christoph
  last_name: Gehlen
- first_name: Inga
  full_name: Hauschildt, Inga
  last_name: Hauschildt
- first_name: Irina
  full_name: Ivanova, Irina
  last_name: Ivanova
- first_name: Steffen
  full_name: Jesinghausen, Steffen
  id: '3959'
  last_name: Jesinghausen
  orcid: https://orcid.org/0000-0003-2611-5298
- first_name: Christopher
  full_name: Klein, Christopher
  last_name: Klein
- first_name: Hans-W.
  full_name: Krauss, Hans-W.
  last_name: Krauss
- first_name: Ludger
  full_name: Lohaus, Ludger
  last_name: Lohaus
- first_name: Dirk
  full_name: Lowke, Dirk
  last_name: Lowke
- first_name: Oliver
  full_name: Mazanec, Oliver
  last_name: Mazanec
- first_name: Sebastian
  full_name: Pawelczyk, Sebastian
  last_name: Pawelczyk
- first_name: Ursula
  full_name: Pott, Ursula
  last_name: Pott
- first_name: Nonkululeko W.
  full_name: Radebe, Nonkululeko W.
  last_name: Radebe
- first_name: Joachim Jürgen
  full_name: Riedmiller, Joachim Jürgen
  last_name: Riedmiller
- first_name: Hans-Joachim
  full_name: Schmid, Hans-Joachim
  id: '464'
  last_name: Schmid
- first_name: Wolfram
  full_name: Schmidt, Wolfram
  last_name: Schmidt
- first_name: Egor
  full_name: Secrieru, Egor
  last_name: Secrieru
- first_name: Dietmar
  full_name: Stephan, Dietmar
  last_name: Stephan
- first_name: Mareike
  full_name: Thiedeitz, Mareike
  last_name: Thiedeitz
- first_name: Manfred
  full_name: Wilhelm, Manfred
  last_name: Wilhelm
- first_name: Viktor
  full_name: Mechtcherine, Viktor
  last_name: Mechtcherine
citation:
  ama: 'Haist M, Link J, Nicia D, et al. Interlaboratory study on rheological properties
    of cement pastes and reference substances: comparability of measurements performed
    with different rheometers and measurement geometries. <i>Materials and Structures</i>.
    Published online 2020. doi:<a href="https://doi.org/10.1617/s11527-020-01477-w">10.1617/s11527-020-01477-w</a>'
  apa: 'Haist, M., Link, J., Nicia, D., Leinitz, S., Baumert, C., von Bronk, T., Cotardo,
    D., Eslami Pirharati, M., Fataei, S., Garrecht, H., Gehlen, C., Hauschildt, I.,
    Ivanova, I., Jesinghausen, S., Klein, C., Krauss, H.-W., Lohaus, L., Lowke, D.,
    Mazanec, O., … Mechtcherine, V. (2020). Interlaboratory study on rheological properties
    of cement pastes and reference substances: comparability of measurements performed
    with different rheometers and measurement geometries. <i>Materials and Structures</i>.
    <a href="https://doi.org/10.1617/s11527-020-01477-w">https://doi.org/10.1617/s11527-020-01477-w</a>'
  bibtex: '@article{Haist_Link_Nicia_Leinitz_Baumert_von Bronk_Cotardo_Eslami Pirharati_Fataei_Garrecht_et
    al._2020, title={Interlaboratory study on rheological properties of cement pastes
    and reference substances: comparability of measurements performed with different
    rheometers and measurement geometries}, DOI={<a href="https://doi.org/10.1617/s11527-020-01477-w">10.1617/s11527-020-01477-w</a>},
    journal={Materials and Structures}, author={Haist, Michael and Link, Julian and
    Nicia, David and Leinitz, Sarah and Baumert, Christian and von Bronk, Tabea and
    Cotardo, Dario and Eslami Pirharati, Mahmoud and Fataei, Shirin and Garrecht,
    Harald and et al.}, year={2020} }'
  chicago: 'Haist, Michael, Julian Link, David Nicia, Sarah Leinitz, Christian Baumert,
    Tabea von Bronk, Dario Cotardo, et al. “Interlaboratory Study on Rheological Properties
    of Cement Pastes and Reference Substances: Comparability of Measurements Performed
    with Different Rheometers and Measurement Geometries.” <i>Materials and Structures</i>,
    2020. <a href="https://doi.org/10.1617/s11527-020-01477-w">https://doi.org/10.1617/s11527-020-01477-w</a>.'
  ieee: 'M. Haist <i>et al.</i>, “Interlaboratory study on rheological properties
    of cement pastes and reference substances: comparability of measurements performed
    with different rheometers and measurement geometries,” <i>Materials and Structures</i>,
    2020, doi: <a href="https://doi.org/10.1617/s11527-020-01477-w">10.1617/s11527-020-01477-w</a>.'
  mla: 'Haist, Michael, et al. “Interlaboratory Study on Rheological Properties of
    Cement Pastes and Reference Substances: Comparability of Measurements Performed
    with Different Rheometers and Measurement Geometries.” <i>Materials and Structures</i>,
    2020, doi:<a href="https://doi.org/10.1617/s11527-020-01477-w">10.1617/s11527-020-01477-w</a>.'
  short: M. Haist, J. Link, D. Nicia, S. Leinitz, C. Baumert, T. von Bronk, D. Cotardo,
    M. Eslami Pirharati, S. Fataei, H. Garrecht, C. Gehlen, I. Hauschildt, I. Ivanova,
    S. Jesinghausen, C. Klein, H.-W. Krauss, L. Lohaus, D. Lowke, O. Mazanec, S. Pawelczyk,
    U. Pott, N.W. Radebe, J.J. Riedmiller, H.-J. Schmid, W. Schmidt, E. Secrieru,
    D. Stephan, M. Thiedeitz, M. Wilhelm, V. Mechtcherine, Materials and Structures
    (2020).
date_created: 2021-05-04T08:49:44Z
date_updated: 2023-01-17T07:42:21Z
department:
- _id: '150'
doi: 10.1617/s11527-020-01477-w
keyword:
- Rheology
- Wall Slip
- Slip
- apparent slip
- suspension
- cement
- concrete
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://link.springer.com/article/10.1617/s11527-020-01477-w
oa: '1'
publication: Materials and Structures
publication_identifier:
  issn:
  - 1359-5997
  - 1871-6873
publication_status: published
quality_controlled: '1'
status: public
title: 'Interlaboratory study on rheological properties of cement pastes and reference
  substances: comparability of measurements performed with different rheometers and
  measurement geometries'
type: journal_article
user_id: '3959'
year: '2020'
...
---
_id: '21947'
abstract:
- lang: eng
  text: Wall slip is a long-known phenomenon in the field of rheology. Nevertheless,
    the origin and the evolution are not completely clear yet. Regarding suspensions,
    the effect becomes even more complicated, because different mechanisms like pure
    slip or slip due to particle migration have to be taken into account. Furthermore,
    suspensions themselves show many flow anomalies and the isolation of slip is complicated.
    In order to develop working physical models, further insight is necessary. In
    this work, we measured experimentally the wall slip velocities of different highly
    filled suspensions in a rectangular slit die directly with respect to the particle
    concentration and the particle size. The slip velocities were obtained using a
    particle image velocimetry (PIV) system. The suspensions consisting of a castor
    oil–cinnamon oil blend and PMMA particles were matched in terms of refractive
    indexes to appear transparent. Hereby, possible optical path lengths larger than
    15 mm were achieved. The slip velocities were found to be in a quadratic relation
    to the wall shear stress. Furthermore, the overall flow rate as well as the particle
    concentration has a direct influence on the slip. Concerning the shear stress,
    there seem to be two regions of slip with different physical characteristics.
    Furthermore, we estimated the slip layer thickness directly from the velocity
    profiles and propose a new interpretation. The PIV technique is used to investigate
    the viscosity and implicit the concentration profile in the slit die. It is shown
    that the particle migration process is quite fast.
article_type: original
author:
- first_name: Steffen
  full_name: Jesinghausen, Steffen
  id: '3959'
  last_name: Jesinghausen
  orcid: https://orcid.org/0000-0003-2611-5298
- first_name: Rene
  full_name: Weiffen, Rene
  last_name: Weiffen
- first_name: Hans-Joachim
  full_name: Schmid, Hans-Joachim
  id: '464'
  last_name: Schmid
citation:
  ama: Jesinghausen S, Weiffen R, Schmid H-J. Direct measurement of wall slip and
    slip layer thickness of non-Brownian hard-sphere suspensions in rectangular channel
    flows. <i>Experiments in Fluids</i>. Published online 2016. doi:<a href="https://doi.org/10.1007/s00348-016-2241-6">10.1007/s00348-016-2241-6</a>
  apa: Jesinghausen, S., Weiffen, R., &#38; Schmid, H.-J. (2016). Direct measurement
    of wall slip and slip layer thickness of non-Brownian hard-sphere suspensions
    in rectangular channel flows. <i>Experiments in Fluids</i>. <a href="https://doi.org/10.1007/s00348-016-2241-6">https://doi.org/10.1007/s00348-016-2241-6</a>
  bibtex: '@article{Jesinghausen_Weiffen_Schmid_2016, title={Direct measurement of
    wall slip and slip layer thickness of non-Brownian hard-sphere suspensions in
    rectangular channel flows}, DOI={<a href="https://doi.org/10.1007/s00348-016-2241-6">10.1007/s00348-016-2241-6</a>},
    journal={Experiments in Fluids}, author={Jesinghausen, Steffen and Weiffen, Rene
    and Schmid, Hans-Joachim}, year={2016} }'
  chicago: Jesinghausen, Steffen, Rene Weiffen, and Hans-Joachim Schmid. “Direct Measurement
    of Wall Slip and Slip Layer Thickness of Non-Brownian Hard-Sphere Suspensions
    in Rectangular Channel Flows.” <i>Experiments in Fluids</i>, 2016. <a href="https://doi.org/10.1007/s00348-016-2241-6">https://doi.org/10.1007/s00348-016-2241-6</a>.
  ieee: 'S. Jesinghausen, R. Weiffen, and H.-J. Schmid, “Direct measurement of wall
    slip and slip layer thickness of non-Brownian hard-sphere suspensions in rectangular
    channel flows,” <i>Experiments in Fluids</i>, 2016, doi: <a href="https://doi.org/10.1007/s00348-016-2241-6">10.1007/s00348-016-2241-6</a>.'
  mla: Jesinghausen, Steffen, et al. “Direct Measurement of Wall Slip and Slip Layer
    Thickness of Non-Brownian Hard-Sphere Suspensions in Rectangular Channel Flows.”
    <i>Experiments in Fluids</i>, 2016, doi:<a href="https://doi.org/10.1007/s00348-016-2241-6">10.1007/s00348-016-2241-6</a>.
  short: S. Jesinghausen, R. Weiffen, H.-J. Schmid, Experiments in Fluids (2016).
date_created: 2021-05-04T08:47:31Z
date_updated: 2023-01-17T07:37:53Z
department:
- _id: '150'
- _id: '9'
doi: 10.1007/s00348-016-2241-6
keyword:
- Rheology
- Wall Slip
- Slip
- apparent slip
- suspension
language:
- iso: eng
main_file_link:
- url: https://link.springer.com/article/10.1007/s00348-016-2241-6
publication: Experiments in Fluids
publication_identifier:
  issn:
  - 0723-4864
  - 1432-1114
publication_status: published
quality_controlled: '1'
status: public
title: Direct measurement of wall slip and slip layer thickness of non-Brownian hard-sphere
  suspensions in rectangular channel flows
type: journal_article
user_id: '3959'
year: '2016'
...