Title: The Effect of Air Entraining Agent on the Rheology of Cement-Based Magnetorheological Pastes

Author(s): Junhyung Kim, Raissa Douglas Ferron

Publication: Materials Journal

Volume:

Issue:

Appears on pages(s):

Keywords: air entraining agent; magnetorheological paste; oscillatory shear; rheology, small amplitude storage modulus; smart material

DOI: 10.14359/51742113

Date: 7/17/2024

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 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 3D concrete printing applications. It is revealed that the incorporation of entrained air results in increasing the MR response and this effect is related to the bubble bridge effect.