Concrete Issue

[Todd.Brock]

Hey all,


The park pad at my moms house that is about 3 years old has a weird issue with a hole starting from the bottom of the slab and working its way up. Mom has been asking me about the concrete bubbling up and I didnt know what she meant. I came to look at it and it was a 1" or so hole filled with mud. The area around the hole "splintered", think a drill bit coming through a board. Any idea what on earth could cause that? It is just a normal driveway, I assume 4-5 inches thick. My cousin, who is a concrete guy poured the entire driveway. It looks great except for this one hole that has come up since last month.

I suspect it was a weak spot in the concrete that hydraulic pressure has pushed up mud into, but thats a SWAG at best.

I would show you a picture of it, but just imagine a 1 inch hole in your drive filled with mud.

Thoughts?

 

[JakeKohl]

a picture would be valuable.

 

[tncatadjuster]

a picture would be valuable.

+1

 

[Todd.Brock]

The pic upload failed from tapatalk. I will upload one tomorrow. Image someone drilled a hole in your driveway and it has soupy mud in it all the way up. Hard to explain and understand. I get it!

 

[dadsEH]

frost

 

[topp64]

I'm guessing that it is caused from the sub grade being too wet when the concrete was poured. Mud will float up during the finishing and ends up with little coverage on top of it. Do you remember if it rained the night before. Even mud on your boots will fall off in the pour and cause problems.

 

[Red Goat]

Sounds like a clump of mud got into the concrete during the pour. It can retain moisture and freeze causing the concrete over it to pucker up and crack. About all you can do is clean out the hole of mud and loose concrete and patch it.

 

[Zeke]

It's a concrete gopher.

 

[Todd.Brock]

As promised.

 

[ddookie]

best guess , clump of mud got mixed in , sometimes if the soil is too acidic it could slowly erode the concrete over time .

 

[Angelfire]

You remember the movie "Tremors"? Time to move....