Testing and modeling of the thixotropic behavior of cementitous materials.

Hasanzadeh, Bashir

doi:10.18297/etd/2868

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…Thixotropy is an important property of printable materials, which can be characterized by a high viscosity at low stress and vice versa [39]. While there are various methods to quantify thixotropy, the "viscosity recovery" test was used to measure the thixotropy of AAS mixtures in this paper.…”

Section: Thixotropy (Shear Thinning and Viscosity Recovery)mentioning

confidence: 99%

Investigation of the properties of alkali-activated slag mixes involving the use of nanoclay and nucleation seeds for 3D printing

Panda

Ruan

Unluer

et al. 2020

Composites Part B: Engineering

144

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This study investigated the properties of alkali activated slag (AAS) binders formulated for extrusion-based 3D printing. The fresh properties of AAS mixes were tailored through the use of nanoclay (NC) and nucleation seeds. The printability criteria employed were the ease of extrusion (extrudability) and the stability of the layered structure (buildability). Introduction of 0.4% NC in AAS mixes led to improved thixotropic properties due to the flocculation effect, which accounted for the extrudability and shape fidelity of the binder. Inclusion of 2% hydromagnesite seeds in this mix design provided additional nucleation sites for the increased precipitation of hydrate phases, resulting in denser microstructures. This enhanced the hydration reaction and improved the structural build-up rate necessary for large-scale 3D printing. The developed AAS mix containing 0.4% NC and 2% hydromagnesite seeds was used in the printing of an actual 3D structure to demonstrate its feasibility to be used in 3D printing applications.

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Section: Thixotropy (Shear Thinning and Viscosity Recovery)mentioning

confidence: 99%

Investigation of the properties of alkali-activated slag mixes involving the use of nanoclay and nucleation seeds for 3D printing

Panda

Ruan

Unluer

et al. 2020

Composites Part B: Engineering

144

View full text Add to dashboard Cite

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Exploration of bioconvection flow of MHD thixotropic nanofluid past a vertical surface coexisting with both nanoparticles and gyrotactic microorganisms

Kọrikọ

Shah

Saleem

et al. 2021

Sci Rep

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This communication presents analysis of gravity-driven flow of a thixotropic fluid containing both nanoparticles and gyrotactic microorganisms along a vertical surface. To further describe the transport phenomenon, special cases of active and passive controls of nanoparticles are investigated. The governing partial differential equations of momentum, energy, nanoparticles concentration, and density of gyrotactic microorganisms equations are converted and parameterized into system of ordinary differential equations and the series solutions are obtained through Optimal Homotopy Analysis Method (OHAM). The related important parameters are tested and shown on the velocity, temperature, concentration and density of motile microorganisms profiles. It is observed that for both cases of active and passive control of nanoparticles, incremental values of thermophoretic parameters corresponds to decrease in the velocity distributions and augment the temperature distributions.

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Testing and modeling of the thixotropic behavior of cementitous materials.

Cited by 2 publications

References 37 publications

Investigation of the properties of alkali-activated slag mixes involving the use of nanoclay and nucleation seeds for 3D printing

Investigation of the properties of alkali-activated slag mixes involving the use of nanoclay and nucleation seeds for 3D printing

Exploration of bioconvection flow of MHD thixotropic nanofluid past a vertical surface coexisting with both nanoparticles and gyrotactic microorganisms

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