Different concrete for different rooms?

[Sword9]

So I've found some things like this

http://www.epoxysystems.com/11.htm

http://www.epoxysystems.com/63.htm

http://www.epoxysystems.com/632.htm

http://www.epoxysystems.com/901.htm

I also found this site which has cork-based expansion joint filling materials http://www.apscork.com/expansion.html

And then I've also seen mechanical things like this http://www.larsenproducts.com/interspan.htm

Are any of these products the sort of thing I should be investigating? Or am I way off course?

[Sword9]

I'm still having trouble gathering more research on this construction technique. Does anyone know of any sites or books that might point me in a better direction? Thanks for the help.

[subatom]

Slabs that need to properly function structurally, and provide isolation, should be designed to do so before the slab is placed.
If you cut all the way thru structural concrete, you will compromise the structural integrety when the reinforcement is interupted.


Compressible fill for structural expansions can be:

fiber board-asphalt impregnated fibers
polyiso- closed cell rigid insulation
cork
closed cell neoprene
spray foam insulation

Expansion joint covers can replace the sealant for larger joints.

I suspect the thickness of fill will be governed by acoustical requirements, rather than structural.

Steel dowels between the foundations may be necessary to maintain elevation, and may transmit too!

[Sword9]

So basically I could leave the styrofoam or celotex that's used to create the boundry of the concrete in and simply caulk over it to keep moisture from coming up from the ground? Or would I need something like backer rod instead of the board?

[sharward]

Keep it comin', guys -- please! At least two of us are glued to this thread, as we are seriously contemplating and/or planning to do this soon, and we want your brains.