Which challenge emerged when Roman fortifications increasingly employed lime mortar?

💡 Explanation

Increased use amplified sulfate attack because seawater could readily penetrate porous lime mortar, triggering expansive crystal formation: this weakening is Alkali-Aggregate Reaction (AAR). Therefore, weathering increased acid degradation, rather than offering greater thermal stability.

• Which risk increases when seasonal flooding affects extensive pietra dura paneling such as in Mughal garden walls?
• Which structural failure contributed to HMS Royal George capsizing in 1782 during routine maintenance?
• Within Mughal gardens, which outcome results when the subsurface brick and mortar conduits experience seasonal volumetric expansion?
• Which operational risk grows when a galleon's hull is copper-sheathed in saltwater?
• Which event results from Byzantine dromon fire misfires?
• Which outcome regularly occurred after the intentional use of Ha-Pani devices within Mughal gardens?