Microgravity Investigation of Cement Solidification (MICS)
Calcium hydroxide (Calcium hydroxide (CH, portlandite) crystals seen in the fractured cross section of C3S pastes solidified in 1g and mg. The hexagonal CH crystal morphology is plate-like in 1g, while prismatic in microgravity.
Image Credit: NASA
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https://science.nasa.gov/image-detail/mics-cement-microstructure/
Image CreditNASA
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