Robustness of cement-based materials: From dosage variations to yield stress fluctuations

Autor: Wenqiang Zuo, Hela Bessaies-Bey, Changwen Miao, Qian Tian, Nicolas Roussel

Publikováno v: Cement and Concrete Research
Cement and Concrete Research, Elsevier, 2021, 139, pp.106260-. ⟨10.1016/j.cemconres.2020.106260⟩

The idea behind the present work is to assess robustness of fresh cement-based materials (i.e. their ability to display the same properties when submitted to variations in the way they are produced) from a generic and analytical point of view. First,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::814326187610954de24cecc4159a91f2
https://hal.archives-ouvertes.fr/hal-03493240

Viscosity modifying agents: Key components of advanced cement-based materials with adapted rheology

Autor: Hela Bessaies-Bey, Kamal H. Khayat, Wolfram Schmidt, Marta Palacios, Nicolas Roussel

Publikováno v: Cement and Concrete Research. 152:106646

Viscosity modifying agents (VMAs) are essential ingredients for the production of flowable cement-based materials. This paper presents an overview of commonly used VMAs and attempts to shed some light on the underlying physics at the origin of their

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4c61504a64cdc4ca9a3603304affba1
https://doi.org/10.1016/j.cemconres.2021.106646

The 'Slugs-test' for extrusion-based additive manufacturing: Protocol, analysis and practical limits

Autor: Léo Demont, Hela Bessaies-Bey, Nicolas Roussel, Jean-François Caron, Nicolas Ducoulombier, Romain Mesnil, Paul Carneau

Publikováno v: Cement and Concrete Composites. 121:104074

This paper introduces a novel rheological technique allowing for the assessment of printable materials yield stress at nozzle exit in the case of extrusion-based 3D printing. This technique is derived from the analysis of the specific gravity-induced

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6be1d27b1d3f1e018f9e050f94a53ecc
https://doi.org/10.1016/j.cemconcomp.2021.104074

Weak bond strength between successive layers in extrusion-based additive manufacturing : measurement and physical origin

Autor: Emmanuel Keita, Patrick Belin, Wenqiang Zuo, Nicolas Roussel, Hela Bessaies-Bey

Publikováno v: Cement and Concrete Research
Cement and Concrete Research, Elsevier, 2019, 123, 7 p. ⟨10.1016/j.cemconres.2019.105787⟩

Requirements on material properties for extrusion-based additive manufacturing mostly focus on the rheological behavior of the cementitious material being printed. The layer interface strength is therefore often considered to result from a proper mix

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15d3f5128b7bcaf17cb3b3c33932659c
https://hal.archives-ouvertes.fr/hal-02494405/file/doc00031387.pdf

Enhancing Printable Concrete Thixotropy by High Shear Mixing

Autor: Aileen Vandenberg, Kay Wille, Nicolas Roussel, Hela Bessaies-Bey

Publikováno v: Digital Concrete 2018 : First Rilem International Conference on Concrete and Digital Fabrication
Digital Concrete 2018 : First Rilem International Conference on Concrete and Digital Fabrication, Sep 2018, ZURICH, Switzerland. pp. 94-101, ⟨10.1007/978-3-319-99519-9_9⟩
RILEM Bookseries ISBN: 9783319995182

Digital Concrete 2018 : First Rilem International Conference on Concrete and Digital Fabrication, ZURICH, SUISSE, 10-/09/2018 - 12/09/2018; Our results show that the storage elastic modulus as a function of time increases at a higher rate for the cem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f86979fb18a73dd4e879eaef60a3d7d
https://hal.archives-ouvertes.fr/hal-01913688/file/doc00029692.pdf