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Which consequence results when winter temperatures induce differential expansion against the 'pietra dura' inlay applied to sandstone in 17th century facades?

A)Chemical staining diffusion accelerates visibly
B)Inlay experiences adhesive creep failure
C)Sandstone matrix frost action is exacerbated
D)Accelerated crack propagation is concentrated

💡 Explanation

Accelerated crack propagation is concentrated around the 'pietra dura' inlay because differential thermal expansion induces stress concentrations in the weaker matrix, therefore cracking increases around the inlays rather than adhesive or chemical effects predominating at that temperature.

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