Water.
You'll need a special saw with a diamond blade.
call me on 9960056173
With a diamond saw. Such saws are available with circular blades with diamond chips coating the rim
Just cut a 2' by 2' cut near the problem, the use a high priced grinder with a diamond grade blade and start cutting. This will get you about 2" deep, enough to pull the 90' Jack Hammer of you choice, and get after it! Atfer hammering and sawing you'll get there. Then you can start digging! Have Fun!
The best way to remove odors from the house slab is to thoroughly wash the house. Airing the house is the other way of removing the odor from the house slab.
without knowing your climate, the best would be a crawl space with a concrete slab.
It would always be best to remove the existing, but sometimes it is cost prohibitive. To pour a slab over an existing slab, especially if it is uneven or fractured, will cause weak points in the new slab for various reasons. If you're going to do it anyway, try to make sure the new slab is minimally 3" thick at the thinnest point of the formed area. Commercial solutions are available also to aid in the adhesion of new concrete over old. These products are available at most home stores.
Supended slab are slab not sit on the ground directlySuspended slab is a slab supported by beams.
convergent boundary
Certain companies exist that have pumping equipment that will hydraulically lift the slab to the desired height. It's called slab jacking. Other than that, it would be best to tear out and replace the existing slab, using an adequate base material to prevent future settling.
a clay slab is a slab made of clay
Convection is a slab-pull