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Which consequence arises in historic pietra dura when uncontrolled humidity fluctuations affect ivory and marble?

A)Inorganic growth stresses develop
B)Delamination via differential expansion
C)Resonance frequency amplitude doubles
D)Isotropic phase transitions accelerate

💡 Explanation

Delamination occurs because differential expansion creates shear stresses at the material interface between ivory and marble; the coefficient of thermal expansion differs, therefore layers detach rather than remaining bonded as temperature changes are induced.

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