Which risk increases when medieval masons used lime impurely?

💡 Explanation

Increased free lime causes expansive CRYSTALLIZATION, because quicklime converts to calcium hydroxide that continues reacting in humid conditions; therefore efflorescence develops with disfigurement, rather than the intended cohesive bind that good slaking provides.

• Which outcome arises in early cast iron plowshares due to repeated soil impact?
• Which risk increased during antiquity when copper smelting lacked sufficient ventilation?
• Which risk increased during winter in Mughal gardens incorporating pietra dura?
• Which outcome occurred during protracted sieges using Song dynasty volley crossbows?
• Which long-term structural risk increased in Gothic cathedrals when masons utilized thin, lightweight stones?
• Which mechanism allowed 18th-century wooden sailing ships to withstand hull stress within limits?