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← HistoryWithin Mughal gardens employing pietra dura, which consequence arises when the substrate experiences significant thermal expansion?
A)Inlay cracking and detachment increases✓
B)Grout compression reduces surface tension
C)Mortar flexibility diminishes cracking risk
D)Aggregate interlock resists tensile stress
💡 Explanation
Thermal expansion mismatch causes shear stress, leading to cracking via interfacial decohesion. The stress exceeds the adhesive strength of the pietra dura inlay bonding, because the coefficients of thermal expansion are dissimilar; therefore, detachment is more likely rather than joint compression.
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