Casting concrete cube for crush testing - GIF

Casting concrete cube for crush testing.

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Previously:

Building concrete slab houses - GIF
Concrete bag lift fail - GIF
Concrete brick pattern press - GIF
Concrete chainsaw - GIF
Concrete fence post removal tool - video

All I've ever seen for certification test of concrete (here in the USA), cardboard helical wound forms are used. I think they are 6" diameter, and match the test machine hydraulic foot and anvil.
I can see that a larger test specimen might give better numbers, if someone is messing with the ratio of materials.
It does appear they are pouring a mono-pour foundation footing with thick slab of some sort.

Quote:

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Originally Posted by metric_taper

All I've ever seen for certification test of concrete (here in the USA), cardboard helical wound forms are used. I think they are 6" diameter, and match the test machine hydraulic foot and anvil.

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I've never seen this either. We always do 4" diameter cylinders in those gray plastic tubes with the caps on them. Can't say I've ever seen a concrete test fish tank before.