What's the difference between concrete and cement?

Concrete is the most important construction material on earth and foundation of our modern society. At first glance it seems rudimentary, but there is a tremendous amount of complexity involved in every part of designing and placing concrete. This video is meant to be a bare-bones introduction to the topic, with a cool demonstration of concrete strength using a hydraulic press.

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Marxist Arrow by Twin Musicom is licensed under a Creative Commons Attribution License
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Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License
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This video is sponsored by Brilliant.