How Much Pressure Does It Take To Crush A Concrete Cylinder

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How Much Pressure Does It Take To Crush A Concrete Cylinder

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[How Much Pressure Does It Take To Crush A Concrete Cylinder]

Concrete Crushing at UIUC Engineering Open House March 2013

Every year at the University of Illinois Urbana-Champaign, the Engineering department has a big open house festival.

As a demo, they crush a concrete cylinder with a huge press. Sounds boring, right?

Yeah, just watch. The result was…startling.

[Male Voice (Background]
Okay, if anybody can’t see I will be reading off the numbers up here as we go.

– Ginormous (and heavy) press.

– 800 pound concrete cylinder, 18″ wide and 1 yard tall

[Male Voice (Background]
Alright, we’re getting load. Okay, we’re up to 100 ‘kips’. That’s 100,000 pounds.

A “kip is a kilopound, or 1000 pounds of force.

[Male Voice (Background]
Now, if you hear some cracking that’s not the concrete, that’s the plywood that’s being compressed. We are now up to 380 kips.

You can hear the plywood cracking now.

[Male Voice (Background]
580 kips. 600. 700. 800. 900. 1,000,000 pounds. 1500 kips, 1600 kips —-

[Sound]
*BOOM!*

[Male Voice (Background] Source: L Y B I O . N E T
Am I the only one that jumped. Isn’t that cool or what? Alright, now lets give a round of applause everybody!

My thanks to the engineers at UIUC who invited me to come talk that day, and letting me have so much fun at their open house!

How Much Pressure Does It Take To Crush A Concrete Cylinder

How Much Pressure Does It Take To Crush A Concrete Cylinder

More info:

eoh.ec.illinois.edu

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