These images compare cement pastes mixed in space (above) and on the ground (below). (IMAGE)

NASA/Johnson Space Center

These images compare cement pastes mixed in space (above) and on the ground (below).

Caption

These images compare cement pastes mixed in space (above) and on the ground (below). The sample from space shows more porosity, or open spaces in the material, affecting concrete strength. Crystals in the Earth sample are more segregated than the space-hardened sample.

Credit

Penn State Materials Characterization Lab

Usage Restrictions

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License

Public Domain

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