Magneto-rheology control in 3D concrete printing : A rheological attempt

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number131374
Journal / PublicationMaterials Letters
Volume309
Online published26 Nov 2021
Publication statusPublished - 15 Feb 2022
Externally publishedYes

Link(s)

Abstract

The application of magneto-rheology control in extrusion-based 3D concrete printing is conceptually examined by rheological experiments on cementitious paste with nano-Fe3O4. The extruding process is simulated by a constant shearing, and the buildability after extrusion is characterized by the structural build-up from small amplitude oscillatory time-sweep test. A pulsed magnetic field is applied during shearing and then removed when the shearing terminates. It is revealed that some residual magnetic clusters exist in the suspension after removing the magnetic field due to the remanent magnetization of the nanoparticles. This results in a faster structural build-up compared to the situation without being treated by magnetic field, and this is independent of the magnetic field duration within the considered range from 1 s to 5 s. This finding offers an innovative methodology to actively improve the buildability of 3D printed concrete by introducing a short-pulsed magnetic field during extrusion. © 2021 The Author(s).

Research Area(s)

  • 3D concrete printing, Active rheology control, Cement paste, Magnetic field

Citation Format(s)

Magneto-rheology control in 3D concrete printing: A rheological attempt. / Jiao, Dengwu; Shi, Caijun; De Schutter, Geert.
In: Materials Letters, Vol. 309, 131374, 15.02.2022.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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