Concrete doesn’t dry – it sets!
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Thanks to http://www.audible.com/minutephysics for supporting this video.
More about the hydration reaction: http://iti.northwestern.edu/cement/monograph/Monograph5_3.html
Portland Cement Hydration: http://people.ce.gatech.edu/~kk92/hyd07.pdf
Calcium Silicate Hydrate: https://en.wikipedia.org/wiki/Calcium_silicate_hydrate
How concrete gets stronger and cures over time: https://courses.washington.edu/cm425/strength.pdf
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Music by Nathaniel Schroeder, http://www.soundcloud.com/drschroeder
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Minute Physics provides an energetic and entertaining view of old and new problems in physics — all in a minute! Created by Henry Reich