Which structural consequence arises when using pozzolanic concrete in Roman aqueducts in seawater environments?

💡 Explanation

When pozzolanic concrete is used in seawater aqueducts, the pozzolan reacts with calcium hydroxide from cement hydration forming calcium silicate hydrate, enhancing resistance to sulfate attack. Therefore enhanced sulfate resistance and durability results, rather than chloride ingress, reduced strength, or decreased flow characteristics found with other concrete types.

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