Creep in reactive colloidal gels: A nanomechanical study of cement hydrates

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Michael Haist
  • Thibaut Divoux
  • Konrad J. Krakowiak
  • Jørgen Skibsted
  • Roland J.M. Pellenq
  • Harald S. Müller
  • Franz Josef Ulm

Organisationseinheiten

Externe Organisationen

  • Massachusetts Institute of Technology (MIT)
  • École normale supérieure de Lyon (ENS de Lyon)
  • University of Houston
  • Aarhus University
  • George Washington University
  • Karlsruher Institut für Technologie (KIT)
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Details

OriginalspracheEnglisch
Aufsatznummer043127
FachzeitschriftPhysical Review Research
Jahrgang3
Ausgabenummer4
PublikationsstatusVeröffentlicht - Dez. 2021

Abstract

From soft polymeric gels to hardened cement paste, amorphous solids under constant load exhibit a pronounced time-dependent deformation called creep. The microscopic mechanism of such a phenomenon is poorly understood in amorphous materials and constitutes an even greater challenge in densely packed and chemically reactive granular systems. Both features are prominently present in hydrating cement pastes composed of calcium silicate hydrate (C-S-H) nanoparticles, whose packing density increases as a function of time, while cement hydration is taking place. Performing nanoindentation tests and porosity measurements on a large collection of samples at various stages of hydration, we show that the creep response of hydrating cement paste is mainly controlled by the interparticle distance and results from slippage between (C-S-H) nanoparticles. Our findings provide a unique insight into the microscopic mechanism underpinning the creep response in aging granular materials, thus paving the way for the design of concrete with improved creep resistance.

ASJC Scopus Sachgebiete

Zitieren

Creep in reactive colloidal gels: A nanomechanical study of cement hydrates. / Haist, Michael; Divoux, Thibaut; Krakowiak, Konrad J. et al.
in: Physical Review Research, Jahrgang 3, Nr. 4, 043127, 12.2021.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Haist, M, Divoux, T, Krakowiak, KJ, Skibsted, J, Pellenq, RJM, Müller, HS & Ulm, FJ 2021, 'Creep in reactive colloidal gels: A nanomechanical study of cement hydrates', Physical Review Research, Jg. 3, Nr. 4, 043127. https://doi.org/10.1103/PhysRevResearch.3.043127
Haist, M., Divoux, T., Krakowiak, K. J., Skibsted, J., Pellenq, R. J. M., Müller, H. S., & Ulm, F. J. (2021). Creep in reactive colloidal gels: A nanomechanical study of cement hydrates. Physical Review Research, 3(4), Artikel 043127. https://doi.org/10.1103/PhysRevResearch.3.043127
Haist M, Divoux T, Krakowiak KJ, Skibsted J, Pellenq RJM, Müller HS et al. Creep in reactive colloidal gels: A nanomechanical study of cement hydrates. Physical Review Research. 2021 Dez;3(4):043127. doi: 10.1103/PhysRevResearch.3.043127
Haist, Michael ; Divoux, Thibaut ; Krakowiak, Konrad J. et al. / Creep in reactive colloidal gels : A nanomechanical study of cement hydrates. in: Physical Review Research. 2021 ; Jahrgang 3, Nr. 4.
Download
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title = "Creep in reactive colloidal gels: A nanomechanical study of cement hydrates",
abstract = "From soft polymeric gels to hardened cement paste, amorphous solids under constant load exhibit a pronounced time-dependent deformation called creep. The microscopic mechanism of such a phenomenon is poorly understood in amorphous materials and constitutes an even greater challenge in densely packed and chemically reactive granular systems. Both features are prominently present in hydrating cement pastes composed of calcium silicate hydrate (C-S-H) nanoparticles, whose packing density increases as a function of time, while cement hydration is taking place. Performing nanoindentation tests and porosity measurements on a large collection of samples at various stages of hydration, we show that the creep response of hydrating cement paste is mainly controlled by the interparticle distance and results from slippage between (C-S-H) nanoparticles. Our findings provide a unique insight into the microscopic mechanism underpinning the creep response in aging granular materials, thus paving the way for the design of concrete with improved creep resistance.",
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AU - Haist, Michael

AU - Divoux, Thibaut

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AU - Pellenq, Roland J.M.

AU - Müller, Harald S.

AU - Ulm, Franz Josef

N1 - Funding Information: This work was funded by a research stipend of the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) to M.H. (Reference No. HA 7917/1-1). The authors thank N. Chatterjee (MIT-EAS) for support in carrying out the WDS mappings as well as K. Ioannidou, S. Yip, P. Stemmermann, K. Garbev, and T. Petersen for extremely fruitful discussions.

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