Which risk increases when accelerated hydration significantly elevates early-age temperature in concrete columns?

💡 Explanation

When accelerated hydration elevates early-age temperature, the delayed ettringite formation (DEF) risk increases greatly because high temperatures destabilize the initial ettringite structure, creating conditions for delayed formation. Therefore, DEF is the primary risk rather than corrosion, increased strength, or alkali-silica reaction which depend on different environmental factors.

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