Filling crack in concrete floor

[madison069]

So last winter I had a issue with the garage door not closing completely and would go back up after it hit the floor. I thought it was odd so I pulled the latch to release the door opener and i found the floor had bowed up in the middle creating a gap on both side of the door. Due to this rise of he concrete floor it wouldn't let the garage door close and stay close.

So Looking at it some more, what I've found is the water was going into the crack of the floor, and the gap between the new driveway concrete and old floor concrete and there's a crack in the middle where it has broke from past rises of the floor.

So my thinking is if I can prevent water from entering the crack then when the snow melts and then refreeze which is causing my floor to bow like it does and I would not have this issue again.

So what is recommended to fill cracks that are an inch wide/deep roughly, and then fill the gap between the new and old concrete? Is there something that is flexible when it's cold that can be used to fill the crack/gap?

 

[Garage Flooring]

So last winter I had a issue with the garage door not closing completely and would go back up after it hit the floor. I thought it was odd so I pulled the latch to release the door opener and i found the floor had bowed up in the middle creating a gap on both side of the door. Due to this rise of he concrete floor it wouldn't let the garage door close and stay close.

So Looking at it some more, what I've found is the water was going into the crack of the floor, and the gap between the new driveway concrete and old floor concrete and there's a crack in the middle where it has broke from past rises of the floor.

So my thinking is if I can prevent water from entering the crack then when the snow melts and then refreeze which is causing my floor to bow like it does and I would not have this issue again.

So what is recommended to fill cracks that are an inch wide/deep roughly, and then fill the gap between the new and old concrete? Is there something that is flexible when it's cold that can be used to fill the crack/gap?

IF I am reading your thread correctly, you have two things going on.

• Expansion joint between new and old concrete
• A large crack that has developed

I don't see anything about you needing to coat the floor, mostly repair what is there....

Let's deal with the expansion joint first. Given the issues that you are having, I would personally wait to put a permanent expansion joint filler in there, especially since you are not coating the floor. I would get some backer rod and a good self leveling urethane caulk.

As to the crack. I would use a gel based crack filler to keep it flexible.

I would also seriously consider a densifier and a sealer to protect the floor

 

[ASHMAN_AZ]

Do you have a picture of the crack?

 

[LegacyIndustrial]

10-4 let's see what's happening so that some of our structural concrete experts can chime in.

Caulk and sealers can only solve so many issues.


Sent from my iPhone using Tapatalk

 

[madison069]

Been busy with work, baby, and HVAC replacement project. I'll get a picture this afternoon and post it up!

 

[madison069]

Here are the pictures!

This is the crack in the middle of the door way,

It goes toward the middle of the garage,

Three cracks meet in the middle, the two outer goes toward the edge of the garage door.

 

[ASHMAN_AZ]

Thats not too bad.

Ive used this epoxy to bond my slab, had really good results.
http://usa.sika.com/dms/getredirect.get/us01.webdms.sika.com/236
or
You can buy in tubes for smaller projects
http://usa.sika.com/dms/getredirect.get/us01.webdms.sika.com/249

You can grind it down smooth, and use a strait edge to make it level to it self.
http://www.garagejournal.com/forum/showpost.php?p=5003860&postcount=34