Formations of Aluminum Tobermorite Crystals (IMAGE)

DOE/Lawrence Berkeley National Laboratory

Formations of Aluminum Tobermorite Crystals

Caption

This image, from a scanning electron microscope, shows formations of aluminum tobermite crystals in a volcanic ash sample from the Campi Flegrei Volcano in Italy. X-ray experiments at Berkeley Lab's Advanced Light Source have helped researchers to understand how these crystals develop over time to strengthen ancient Roman concrete structures. The scale bar at lower right represents 20 microns, or 20 millionths of a meter.

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University of Utah

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