Is there any super duper expanding concrete?

[Jeken85]

I am searching for something that likely doesn't exist.

I would like an expanding concrete with a very high expansion. Most I find are around 2-4%, but I would want something that expands 20% or more.

I thought I saw some compound/paste that swells significantly like adhesive putty. Does anyone have any good suggestions?

 

[Matti_75]

What will you use it for?

 

[tack]

Could this be something, have used a few times and works excellently.
http://www.northstar.se/se/produkter/klattring/bultutrustning/kemankare/
/Thanks

 

[oceanis]

Asking the same question as Matti_75, what do you need it for because normally you never need that much expansion.

 

[Jeken85]

Okay, I'll start from the beginning.....
I need it to support the beams under the floor of the house. When it was built, the mason forgot to measure where the beams under the house were, and right where he placed the vents for the crawl space, the beam has no support and the floor is sagging inside. I bought square profiles 150x150x6 which I planned to install where the vent is, so I don't block it but still get some support. The hole is about 160x190. I was planning to lift the beam with a jack and then cast with the wonder mix without dealing with messy expanding concrete which is like filmjölk since you have to seal all sides. I want the expansion to be able to just cast, place the profile, wedge it in place, and then everything will settle to the right level that I want.

 

[Jeken85]

This is good stuff for a lot of things but it doesn't expand that much, right?

 

[tack]

Read it wrong, thought you wanted an expansion bolt for concrete, funny how wrong things can get sometimes.
Now I've understood what you meant, unfortunately, I can't help you, I have no knowledge in the area.
/Thanks