Which outcome increased water damage to Roman concrete?

💡 Explanation

Higher chloride ingress occurred with seawater because concrete relies on pozzolanic reactions hardening; therefore accelerated rebar corrosion occurred, rather than enhanced material consolidation from mineral precipitation within volcanic ash.

• Which risk increased disproportionately upon Viking longships using rope bridges for rapid troop deployment?
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• Which vulnerability exposed during Roman sieges with ballistae increased risk of defensive structure collapse?
• Which outcome occurred when medieval instrument makers used brass alloys rather than iron when constructing astronomical astrolabes?
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