Microgravity effect on microstructural development of tri-calcium silicate (C3S) paste

Juliana Moraes Neves, Peter J. Collins, Ryan P. Wilkerson, Richard N. Grugel, Aleksandra Z. Radlinska

Research output: Contribution to journalArticle

Abstract

For the first time, tricalcium silicate (C3S) and an aqueous solution were mixed and allowed to hydrate in the microgravity environment aboard the International Space Station (ISS). The research hypothesis states that minimizing gravity-driven transport phenomena, such as buoyancy, sedimentation, and thermosolutal convection ensures diffusion-controlled crystal growth and, consequently, lead to unique microstructures. Results from SEM micrographs, image analysis, mercury intrusion porosimetry, thermogravimetry, and x-ray diffraction revealed that the primary differences in μg hydrated C3S paste are increased porosity and a lower aspect ratio of portlandite crystals, likely due to a more uniform phase distribution. Relevant observations led by the presence or absence of gravity, including bleeding effect, density, and crystallography are also presented and discussed.

Original languageEnglish (US)
Article number83
JournalFrontiers in Materials
Volume6
DOIs
StatePublished - Apr 15 2019

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Calcium silicate
Microgravity
Ointments
Gravitation
Crystallography
Space stations
Crystallization
Hydrates
Buoyancy
Mercury
Sedimentation
Crystal growth
Image analysis
Silicates
Thermogravimetric analysis
Aspect ratio
Porosity
Diffraction
X rays
Crystals

All Science Journal Classification (ASJC) codes

  • Materials Science (miscellaneous)

Cite this

Moraes Neves, Juliana ; Collins, Peter J. ; Wilkerson, Ryan P. ; Grugel, Richard N. ; Radlinska, Aleksandra Z. / Microgravity effect on microstructural development of tri-calcium silicate (C3S) paste. In: Frontiers in Materials. 2019 ; Vol. 6.
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Microgravity effect on microstructural development of tri-calcium silicate (C3S) paste. / Moraes Neves, Juliana; Collins, Peter J.; Wilkerson, Ryan P.; Grugel, Richard N.; Radlinska, Aleksandra Z.

In: Frontiers in Materials, Vol. 6, 83, 15.04.2019.

Research output: Contribution to journalArticle

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AU - Moraes Neves, Juliana

AU - Collins, Peter J.

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AU - Radlinska, Aleksandra Z.

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