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← HistoryWhich consequence results when uncemented masonry joints undergo freeze-thaw cycles?
A)Increasing mortar joint expansion
B)Progressive structural disintegration✓
C)Accelerated silicon dioxide deposition
D)Reduced material thermal conductivity
💡 Explanation
Progressive structural disintegration occurs because water expands upon freezing, exerting pressure within masonry pores. This pressure overcomes the stone's cohesive strength via frost weathering, therefore fracturing occurs at the joints, rather than thermal breakdown.
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