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Which mechanism limits the long-term viability of delicately inlaid pietra dura on exposed Mughal structures?

A)Differential thermal expansion coefficients
B)Osmotic pressure from alkaline mortars
C)Electrolytic corrosion from ferrous inclusions
D)Fungal hyphae penetrating stone interfaces

💡 Explanation

Material failure arises because temperature causes components to expand at varied rates, magnifying stress at the pietra dura interfaces due to differential thermal expansion coefficients and weakening them. Therefore, layers debond, rather than chemical reactions eroding them uniformly.

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