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← HistoryWhich outcome of accelerated deterioration risk increases within humid conditions impacting pietra dura at Taj Mahal?
A)Differential thermal Expansion
B)Galvanic corrosion weakening joints
C)Microbial etching of substrate
D)Delamination caused by Efflorescence✓
💡 Explanation
Efflorescence causes delamination of the pietra dura because dissolved salts migrate to the surface, crystallizing and exerting disruptive forces, therefore, layers separate as the pressure increases, rather than uniform corrosion or thermal effects.
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