Which risk increases when Roman road pavers did not properly compact aggregate base layers beneath paving stones?

💡 Explanation

When Roman road pavers neglected proper compaction, voids in the aggregate base allowed water penetration, leading to freeze-thaw cycling because ice expansion exacerbates cracking and destabilizes the road surface. Therefore increased road cracking results, rather than reduced slipperiness, resonance, or thermal expansion which involve different physical mechanisms.

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