Hydraulic press for testing concrete and grout - GIF

Hydraulic press for testing concrete and grout.

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Previously:

https://www.homemadetools.net/forum/...802#post152317
https://www.homemadetools.net/forum/...029#post137873
https://www.homemadetools.net/forum/...556#post143105

Concrete by itself is strong to a point. Calif found that it's not as strong as one thinks when put to other stresses. That's why all bridges with concrete columns were wrapped in steel to help them under stresses like earthquakes.