Luminescent concrete emits light by means of phosphorescence. Ultraviolet light is absorbed and re-emitted at higher wave-lengths, creating a visible glow. When the phosphorescent pigment is added to expansion cement, an uneven distribution provides record of mixing strokes. When the phosphorescent pigment is used as an aggregate in concrete, the even distribution promotes average uniformity in light emission. As the concrete surface erodes, virgin aggregate is exposed, extending the lifespan of luminescence.
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