Does Rebar cause concrete to crack? - TB Episode 41

Concrete always cracks, we all know that, but why does it crack if it is reinforced? All concrete that I have ever seen that cracks has one thing in common, it is reinforced. Is there a chance that the reinforcement itself may be the cause of the cracks? Watch video as I explore that idea that rebar itself may be the cause of concrete cracks.
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Видео Does Rebar cause concrete to crack? - TB Episode 41 канала Texas Barndominiums