Concremate Expanding Cement

[@franklingomez5311]

Well obviously the square tube is going to bend first, the metal its made from is much thinner than the rebar. After that square tube has bent, there's really no force being applied to the rebar.. if you would have kept going with the jack, the rebar still wouldnt have had a significant amount of force pulling up on them, rather they would have had more of a tendency to pull inwards towards the jack due to the points where it was welded to the tube becoming closer with every pump. Would be nice to see this demonstration again but using solid square stock welded to the rebar instead of that anemic square tubing.

[@horatiolancaster4594]

You filled the block to about 1" from the top and then showed one dry that was level with the top. Did it expand that much? Your title about "Expanding" Cement didn't explain the expanding part.

[@gusbisbal9803]

Use 6mm thick RHS 50mm by 50mm and then its a demonstration. That was 2mm 20x20mm RHS. I can bend a 1m length of that on my knee.

[@rohandoe8361]

You did not show the expansion!

[@noelgillett346]

What is the final density? What is the expansion coefficient? Obviously we're all brain dead as this error of ommission is everywhere the same, across industries and all over the world.

[@rlaxton666]

According to their website it is 0.125%. This is obviously not much, but considering normal concrete shrinks up to 0.05% it is huge.

[@noelgillett346]

@@rlaxton666 or do you mean 12.5%?

[@charliepearce8767]

Go well in my next door neighbours lawnmower engine....