---
_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: '21948'
abstract:
- lang: eng
  text: <jats:p>Since suspensions (e.g., in food, cement, or cosmetics industries)
    tend to show wall slip, the application of structured measuring surfaces in rheometers
    is widespread. Usually, for parallel-plate geometries, the tip-to-tip distance
    is used for calculation of absolute rheological values, which implies that there
    is no flow behind this distance. However, several studies show that this is not
    true. Therefore, the measuring gap needs to be corrected by adding the effective
    gap extension    δ    to the prescribed gap height    H    in order to obtain
    absolute rheological properties. In this paper, we determine the effective gap
    extension    δ    for different structures and fluids (Newtonian, shear thinning,
    and model suspensions that can be adjusted to the behavior of real fluids) and
    compare the corrected values to reference data. We observe that for Newtonian
    fluids a gap- and material-independent correction function can be derived for
    every measuring system, which is also applicable to suspensions, but not to shear
    thinning fluids. Since this relation appears to be mainly dependent on the characteristics
    of flow behaviour, we show that the calibration of structured measuring systems
    is possible with Newtonian fluids and then can be transferred to suspensions up
    to a certain particle content.</jats:p>
article_number: '467'
article_type: original
author:
- first_name: Sebastian
  full_name: Pawelczyk, Sebastian
  id: '38243'
  last_name: Pawelczyk
- first_name: Marieluise
  full_name: Kniepkamp, Marieluise
  last_name: Kniepkamp
- first_name: Steffen
  full_name: Jesinghausen, Steffen
  id: '3959'
  last_name: Jesinghausen
  orcid: https://orcid.org/0000-0003-2611-5298
- first_name: Hans-Joachim
  full_name: Schmid, Hans-Joachim
  id: '464'
  last_name: Schmid
citation:
  ama: 'Pawelczyk S, Kniepkamp M, Jesinghausen S, Schmid H-J. Absolute Rheological
    Measurements of Model Suspensions: Influence and Correction of Wall Slip Prevention
    Measures. <i>Materials</i>. Published online 2020. doi:<a href="https://doi.org/10.3390/ma13020467">10.3390/ma13020467</a>'
  apa: 'Pawelczyk, S., Kniepkamp, M., Jesinghausen, S., &#38; Schmid, H.-J. (2020).
    Absolute Rheological Measurements of Model Suspensions: Influence and Correction
    of Wall Slip Prevention Measures. <i>Materials</i>, Article 467. <a href="https://doi.org/10.3390/ma13020467">https://doi.org/10.3390/ma13020467</a>'
  bibtex: '@article{Pawelczyk_Kniepkamp_Jesinghausen_Schmid_2020, title={Absolute
    Rheological Measurements of Model Suspensions: Influence and Correction of Wall
    Slip Prevention Measures}, DOI={<a href="https://doi.org/10.3390/ma13020467">10.3390/ma13020467</a>},
    number={467}, journal={Materials}, author={Pawelczyk, Sebastian and Kniepkamp,
    Marieluise and Jesinghausen, Steffen and Schmid, Hans-Joachim}, year={2020} }'
  chicago: 'Pawelczyk, Sebastian, Marieluise Kniepkamp, Steffen Jesinghausen, and
    Hans-Joachim Schmid. “Absolute Rheological Measurements of Model Suspensions:
    Influence and Correction of Wall Slip Prevention Measures.” <i>Materials</i>,
    2020. <a href="https://doi.org/10.3390/ma13020467">https://doi.org/10.3390/ma13020467</a>.'
  ieee: 'S. Pawelczyk, M. Kniepkamp, S. Jesinghausen, and H.-J. Schmid, “Absolute
    Rheological Measurements of Model Suspensions: Influence and Correction of Wall
    Slip Prevention Measures,” <i>Materials</i>, Art. no. 467, 2020, doi: <a href="https://doi.org/10.3390/ma13020467">10.3390/ma13020467</a>.'
  mla: 'Pawelczyk, Sebastian, et al. “Absolute Rheological Measurements of Model Suspensions:
    Influence and Correction of Wall Slip Prevention Measures.” <i>Materials</i>,
    467, 2020, doi:<a href="https://doi.org/10.3390/ma13020467">10.3390/ma13020467</a>.'
  short: S. Pawelczyk, M. Kniepkamp, S. Jesinghausen, H.-J. Schmid, Materials (2020).
date_created: 2021-05-04T08:48:48Z
date_updated: 2023-01-17T07:45:59Z
department:
- _id: '150'
doi: 10.3390/ma13020467
keyword:
- wall slip prevention
- effective gap height
- parallel-plate system
- structured surfaces
- model suspensions
- cement paste
- fresh concrete
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.mdpi.com/1996-1944/13/2/467
oa: '1'
publication: Materials
publication_identifier:
  issn:
  - 1996-1944
publication_status: published
quality_controlled: '1'
status: public
title: 'Absolute Rheological Measurements of Model Suspensions: Influence and Correction
  of Wall Slip Prevention Measures'
type: journal_article
user_id: '3959'
year: '2020'
...
---
_id: '39493'
abstract:
- lang: eng
  text: This article presents the animated visual 3D programming language SAM (Solid
    Agents in Motion) for parallel systems specification and animation. A SAM program
    is a set of interacting agents synchronously exchanging messages. The agent's
    behaviour is specified by means of production rules with a condition and a sequence
    of actions each. Actions are linearly ordered and execute when matching a rule.
    In SAM, main syntactic objects like agents, rules, and messages are 3D. These
    objects can have an abstract and a concrete, solid 3D presentation. While the
    abstract representation is for programming and debugging, the concrete representation
    is for animated 3D end-user presentations. After outlining the concepts of SAM
    this article gives two programming examples of 3D micro worlds and an overview
    of the programming environment.
author:
- first_name: Christian
  full_name: Geiger, Christian
  last_name: Geiger
- first_name: Wolfgang
  full_name: Müller, Wolfgang
  id: '16243'
  last_name: Müller
- first_name: W.
  full_name: Rosenbach, W.
  last_name: Rosenbach
citation:
  ama: 'Geiger C, Müller W, Rosenbach W. SAM - An Animated 3D Programming Language.
    In: <i>Proceedings of the IEEE Symposium on Visual Languages</i>. ; 1998. doi:<a
    href="https://doi.org/10.1109/VL.1998.706167">10.1109/VL.1998.706167</a>'
  apa: Geiger, C., Müller, W., &#38; Rosenbach, W. (1998). SAM - An Animated 3D Programming
    Language. <i>Proceedings of the IEEE Symposium on Visual Languages</i>. 1998 IEEE
    Symposium on Visual Languages, Halifax, Canada. <a href="https://doi.org/10.1109/VL.1998.706167">https://doi.org/10.1109/VL.1998.706167</a>
  bibtex: '@inproceedings{Geiger_Müller_Rosenbach_1998, place={Halifax, Canada}, title={SAM
    - An Animated 3D Programming Language}, DOI={<a href="https://doi.org/10.1109/VL.1998.706167">10.1109/VL.1998.706167</a>},
    booktitle={Proceedings of the IEEE Symposium on Visual Languages}, author={Geiger,
    Christian and Müller, Wolfgang and Rosenbach, W.}, year={1998} }'
  chicago: Geiger, Christian, Wolfgang Müller, and W. Rosenbach. “SAM - An Animated
    3D Programming Language.” In <i>Proceedings of the IEEE Symposium on Visual Languages</i>.
    Halifax, Canada, 1998. <a href="https://doi.org/10.1109/VL.1998.706167">https://doi.org/10.1109/VL.1998.706167</a>.
  ieee: 'C. Geiger, W. Müller, and W. Rosenbach, “SAM - An Animated 3D Programming
    Language,” presented at the 1998 IEEE Symposium on Visual Languages, Halifax,
    Canada, 1998, doi: <a href="https://doi.org/10.1109/VL.1998.706167">10.1109/VL.1998.706167</a>.'
  mla: Geiger, Christian, et al. “SAM - An Animated 3D Programming Language.” <i>Proceedings
    of the IEEE Symposium on Visual Languages</i>, 1998, doi:<a href="https://doi.org/10.1109/VL.1998.706167">10.1109/VL.1998.706167</a>.
  short: 'C. Geiger, W. Müller, W. Rosenbach, in: Proceedings of the IEEE Symposium
    on Visual Languages, Halifax, Canada, 1998.'
conference:
  location: Halifax, Canada
  name: 1998 IEEE Symposium on Visual Languages
date_created: 2023-01-24T11:39:30Z
date_updated: 2023-01-24T11:39:35Z
department:
- _id: '672'
doi: 10.1109/VL.1998.706167
keyword:
- Animation
- Computer languages
- Solids
- Concrete
- Application software
- Virtual reality
- Programming profession
- Switches
- Visualization
- Debugging
language:
- iso: eng
place: Halifax, Canada
publication: Proceedings of the IEEE Symposium on Visual Languages
publication_identifier:
  isbn:
  - 0-8186-8712-6
status: public
title: SAM - An Animated 3D Programming Language
type: conference
user_id: '5786'
year: '1998'
...