Can you do surgery on a concrete slab ?

[gjbuilder]

New concrete slab. Shrinkage cracks. We only watered it 4x per day instead of running sprinklers on it continuously the first 5-7 days, like we should have.

Not such a big deal and I can live with it, BUT the very first 12x12 section of concrete, just as you walk into the building, front and center ... has the biggest shrink crack and is really noticeable.

Not that I would ever do this, because clearly this would be crazy ... but ...

Is it possible to put a diamond saw into the tooled joints of this 12x12 section, and saw them down to 3" or so, and then jackhammer up the entire 12x12 section, down to, and a little below, the rebar ... and then repour that section ?

I think it's workable, my only concern would be creating actual cracks (not shrink cracks) in the adjacent sections while we jackhammer ... which is why I suggest deepening the tooled joints first.

No, I would never do this and anyone who would do this would be crazy.

But I'm curious ...

 

[Marctrees]

You are well ahead of most others with the watering you have done.

Why not let it rest a few months, vacuum and brush out the crack, and fill with some caulk made for that use? Marc

 

[James-W]

I don't know if you are interested in putting something on the floor, but one option you have is to cover the garage floor with plastic floor tiles. You could go with porcelain or ceramic floor tiles too, but if you prefer to do that I would wait awhile longer and see if the cracks get bigger.

 

[rsanter]

Let e floor sit for a while.
Clean up the floor and specifically the crack.
Put epoxy in the crack and smooth the top.
Epoxy the floor

Bob

 

[LegacyIndustrial]

Some concrete cracks and the rest will too.

 

[NUTTSGT]

I'm curious on how big these cracks are ? Do you have any pics you can post up ?