Red Seal Carpenter Practice Exam

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What is one method that can be used to prevent concrete from freezing in cold weather?

  1. Direct fired heaters.

  2. Insulated tarps.

  3. Concrete accelerators.

  4. Concrete retarders.

The correct answer is: Insulated tarps.

Insulated tarps are used to prevent concrete from freezing in cold weather as they provide insulation to keep the concrete at the required temperature for proper setting. Direct fired heaters may be too extreme and can cause the concrete to overheat and crack. Concrete accelerators and retarders are additives used to speed up or slow down the setting time of concrete, but they do not prevent freezing.

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