Which long-term degradation becomes prominent when water interacts with pietra dura inlay within unsealed Mughal-era structures?

💡 Explanation

Salt efflorescence-induced spalling occurs, because capillary action draws groundwater containing dissolved salts into porous stones; crystallization pressure then causes surface flaking. Therefore, spalling is accelerated, rather than thermal or seismic effects, within the inlay's complex mineral matrix.

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