How can I fix this?

[78C-10]

Hello everyone. These are two different photos, this just started last winter. The concrete is only six years old. These cracks are as wide as my Subaru Outback. I started parking my Outback in the garage every day last winter and although my garage is not heated the salty slush would drip off the rear tires and mud flaps and flow into the relief cut.
My guess is it would soak into the cut and freeze buckling the concrete up and this crumbling started. How can I prevent this from getting worse and fix what damage I already have? Thank you in advance.

 

[tre873]

Fill the gaps with a flexible product like Sika to prevent the water from getting in there and freezing.

 

[78C-10]

Fill the gaps with a flexible product like Sika to prevent the water from getting in there and freezing.

Thank you but what can I do to fill in where the existing concrete has flaked away to make it a smooth floor again? Epoxy, concrete caulk?

 

[rsanter]

Clean that slot out.
Hit it with a wire brush to remove anything loose, or sand blast it.
Clean and vacuume very well.

Then fill with a flexible product

 

[James-W]

This is the Garage Journal so rip that floor out and pour a new floor.

 

[Garage Flooring]

This is the Garage Journal so rip that floor out and pour a new floor.

NICE

 

[Armorpoxy]

Hi,
Clean out the cracks, fill them with foam backer rod or sand to support the filler leaving about 3/8" of depth. Then use something like Sikaflex or we carry a commercial Flexible Joint Filler to seal them up.

 

[78C-10]

Hi,
Clean out the cracks, fill them with foam backer rod or sand to support the filler leaving about 3/8" of depth. Then use something like Sikaflex or we carry a commercial Flexible Joint Filler to seal them up.

Thank you for the information!

 

[ConCretin]

The only thing I'd add is this; there appear to be cracked and/or loose bits of concrete along the edges. If you don't remove them, the caulking will pull them loose with any thermal movement, which will leave you with an even bigger problem.

I'm not sure how wide the existing joints are but you might want to consider chasing the joints with a crack chasing blade on a grinder to clean up the edges. The obvious downside to this approach will be a wider joint.