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← HistoryWhich consequence occurs when extreme temperature cycling stresses Byzantine mosaic tile adhesives?
A)Tesserae detach via differential expansion✓
B)Gold leaf oxidizes, dulling icons
C)Grout erodes from hydraulic action
D)Substrate cracks from freeze-thaw cycles
💡 Explanation
Tesserae detachment happens because differential thermal expansion weakens the binding agent via adhesive failure, therefore tiles pop off rather than remaining adhered, because the adhesive's coefficient of thermal expansion differs from the substrate and the tile material.
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