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← HistoryWhich risk increases when alternating wet/dry cycles affect Mughal-era pietra dura?
A)Accelerated material creep
B)Increased differential thermal expansion
C)Enhanced capillary action stress✓
D)Minimized galvanic corrosion rate
💡 Explanation
Capillary action stress increases because moisture infiltrates micro-cracks within the porous pietra dura, then evaporates. The expansion-contraction cycles due to repeated moisture ingression weakens the stone, therefore increasing its fracturing and detachment risk, rather than preventing damage via other means.
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