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← HistoryWhich degradation accelerates damage ancient mosaic tile, due to placement?
A)Material creep under static pressure
B)Sulfate attack from groundwater ions✓
C)Accelerated oxidation forms microfractures
D)Dezincification by thermal galvanic reactions
💡 Explanation
Groundwater's upward capillary action causes sulfate attack, weakening the binding mortar because ettringite crystal formation exerts expansive forces via crystallization pressure, rather than oxidation or creep therefore the tile detaches.
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