What does ACI recommend to manage heat of hydration?

What does ACI recommend to manage heat of hydration?

• A. Use of low-heat cement for large pours
• B. Cooling methods (e.g., cooled mixing water, ice)
• C. Temperature monitoring during curing
• D. All of the above

Answer: (D)

Managing heat of hydration is about keeping the temperature rise in concrete under control, especially in large pours where heat can build up and later cause cracking as the mass cools. Using low-heat cement directly reduces the amount of heat released during hydration, helping to lower the peak internal temperature. Cooling methods, like cooled mixing water or adding ice, lower the temperature of the concrete mix itself, further limiting how hot it gets as it hydrates. Monitoring temperature during curing provides real-time data so you can take timely actions to keep temperatures within safe limits, such as adjusting curing conditions or adding cooling measures. Together, these approaches address heat generation, initial temperature, and ongoing temperature tracking, making all of them a recommended combination.

Managing heat of hydration is about keeping the temperature rise in concrete under control, especially in large pours where heat can build up and later cause cracking as the mass cools. Using low-heat cement directly reduces the amount of heat released during hydration, helping to lower the peak internal temperature. Cooling methods, like cooled mixing water or adding ice, lower the temperature of the concrete mix itself, further limiting how hot it gets as it hydrates. Monitoring temperature during curing provides real-time data so you can take timely actions to keep temperatures within safe limits, such as adjusting curing conditions or adding cooling measures. Together, these approaches address heat generation, initial temperature, and ongoing temperature tracking, making all of them a recommended combination.