CEMENT 1 (IMAGE)

Rice University

CEMENT 1

Caption

Small cracks in a stressed, painted cement block are barely visible under ambient lighting (left panel) but show up clearly in the near-infrared image at right. Rice University scientists discovered silicon crystals in Portland cement emit fluorescent, infrared light that can reveal early damage in concrete that might otherwise be overlooked.

Credit

Weisman Research Group/Nagarajaiah Group/Rice University

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