Why do we NEED air bubbles in concrete? | air entrained concrete

This video explains the importance of air bubbles for providing concrete resistance to freeze thaw damage. The video explains why small bubbles are more effective at providing freeze thaw resistance than larger bubbles. Finally, data is presented that shows how the freeze thaw durability of concrete changes as the average size of the air bubbles change. The video goes on to point out how modern freeze thaw specifications are flawed.

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Видео Why do we NEED air bubbles in concrete? | air entrained concrete канала Tyler Ley