What risk increases during freeze-thaw cycles within external pietra dura inlays?

💡 Explanation

Freeze-thaw degrades external pietra dura because differential thermal expansion induces stress between different inlay materials, therefore cracking and detachment are promoted, rather than oxidation which relies on moisture and chemical action.

• Which risk increases when thermal cycling acts upon dissimilar materials joined via pietra dura inlay within historical structures?
• Which outcome directly resulted from the quipu accounting inaccuracy?
• Which outcome resulted when the Baiduanshan furnaces were converted to smelting?
• Which consequence occurs when winter freeze/thaw cycles act on Roman mosaics?
• Which structural failure mode was most increased when underminng Roman fortifications during sieges?
• Which outcome arose from degradation limits in longship rigging?