kayah4399 kayah4399

24-05-2021
Engineering

contestada

Air entrainment is used in concrete to: __________.
1. Strengthen the concrete
2. Increase the resistance of the concrete to freeze thaw damage
3. Create a better surface appearance
4. Make the concrete easier to handle during placement
5. Help evaporate excess water from the curing concrete

Respuesta :

firered21 firered21

24-05-2021

The answer is number 2) Increase the resistance of the concrete to freeze-thaw damage.

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