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← HistoryWhich risk increases when hygroscopic salts migrate within Byzantine mosaics?
A)Tesserae dimensional cracking expands rapidly
B)Gold leaf sublimation accelerates sharply
C)Grout chemical reduction amplifies locally
D)Binding mortar delamination initiates mechanically✓
💡 Explanation
Binding mortar delamination increases because CRYSTALLIZATION PRESSURE from salt expansion exceeds mortar tensile strength creating progressive failure. Therefore, it leads to mosaic detachment, rather than tesserae cracking which results primarily from thermal expansion coefficient mismatch alone.
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