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← HistoryWhich consequence resulted from lime mortar carbonation halting in Roman fortifications?
A)Cement hydration weakens over time
B)Wall integrity reduces in acidic conditions✓
C)Tufa stone expands and cracks apart
D)Shear strength failure due to thermal expansion
💡 Explanation
Wall integrity decreased in acidic conditions due to lime mortar carbonatation because ongoing exposure to acid rain depleted free lime, leading to a loss of binding capabilities. Therefore structural stability diminishes rather than material strength being enhanced or thermal effects contributing directly to the degradation.
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