Title:
Effect of Air-Entraining Agent on Rheology of Cement- Based Magnetorheological Pastes
Author(s):
Junhyung Kim and Raissa Douglas Ferron
Publication:
Materials Journal
Volume:
121
Issue:
5
Appears on pages(s):
3-12
Keywords:
air-entraining agent (AEA); magnetorheological (MR) paste; rheology; small-amplitude oscillatory shear (SAOS); smart material; storage modulus.
DOI:
10.14359/51742113
Date:
9/1/2024
Abstract:
Embedding magnetic particles into cement paste produces a smart
material in which the rheological properties of the resultant paste
can be actively controlled through the use of magnetorheological
(MR) principles. This research investigates the rheological
behavior of cement-based MR pastes with and without air entrainment to gain a better understanding of the effects of air-entrained bubbles on MR cement pastes. Such information would be critical for the use of such MR pastes in three-dimensional (3-D) concrete printing applications. It is revealed that the incorporation of entrained air increases the MR response, and this effect is related
to the bubble-bridge effect.
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