Which outcome accelerated decline in Mughal-era pietra dura?

💡 Explanation

Groundwater rise wicks salts into porous stone. Salt crystallization exerts pressure – a form of crystal shattering – mechanically detaching inlaid elements, because the pressure exceeds the adhesive strength; therefore, loss of pietra dura, rather than differential thermal expansion, leads to detachment under constant, moderate gradients.

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• Which risk increases when surface pressure exceeds material yield strength surrounding 'pietra dura' inlay in Mughal-era structures?
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